mirror of
https://github.com/dashr9230/SA-MP.git
synced 2024-11-27 16:30:44 +00:00
773 lines
17 KiB
C++
773 lines
17 KiB
C++
#include "DS_Table.h"
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#include "DS_OrderedList.h"
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#include <string.h>
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#include <assert.h>
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using namespace DataStructures;
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#ifdef _MSC_VER
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#pragma warning( push )
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#endif
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#ifdef _MSC_VER
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#pragma warning( disable : 4100 ) // warning C4100: <variable name> : unreferenced formal parameter
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#endif
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void ExtendRows(Table::Row* input, int index)
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{
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input->cells.Insert(new Table::Cell );
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}
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#ifdef _MSC_VER
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#pragma warning( disable : 4100 ) // warning C4100: <variable name> : unreferenced formal parameter
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#endif
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void FreeRow(Table::Row* input, int index)
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{
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unsigned i;
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for (i=0; i < input->cells.Size(); i++)
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{
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delete input->cells[i];
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}
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delete input;
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}
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Table::Cell::Cell()
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{
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isEmpty=true;
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}
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Table::Cell::~Cell()
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{
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Clear();
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}
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Table::Cell& Table::Cell::operator = ( const Table::Cell& input )
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{
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isEmpty=input.isEmpty;
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i=input.i;
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if (input.c)
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{
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if (c)
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delete [] c;
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c = new char [i];
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memcpy(c, input.c, i);
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}
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return *this;
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}
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Table::Cell::Cell( const Table::Cell & input)
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{
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isEmpty=input.isEmpty;
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i=input.i;
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if (input.c)
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{
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if (c)
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delete [] c;
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c = new char [i];
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memcpy(c, input.c, i);
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}
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}
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void Table::Cell::Set(int input)
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{
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assert(isEmpty);
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i=input;
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c=0;
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isEmpty=false;
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}
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void Table::Cell::Set(char *input)
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{
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assert(isEmpty);
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if (input && input[0])
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{
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i=(int)strlen(input)+1;
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c = new char [i];
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strcpy(c, input);
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}
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else
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c=0;
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i=0;
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isEmpty=false;
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}
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void Table::Cell::Set(char *input, int inputLength)
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{
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assert(isEmpty);
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if (input)
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{
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c = new char [inputLength];
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i=inputLength;
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memcpy(c, input, inputLength);
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}
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else
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{
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c=0;
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i=0;
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}
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isEmpty=false;
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}
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void Table::Cell::Get(int *output)
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{
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assert(isEmpty==false);
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*output=i;
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}
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void Table::Cell::Get(char *output)
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{
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assert(isEmpty==false);
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strcpy(output, c);
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}
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void Table::Cell::Get(char *output, int *outputLength)
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{
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assert(isEmpty==false);
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memcpy(output, c, i);
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if (outputLength)
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*outputLength=i;
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}
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Table::Cell::Cell(int intValue, char *charValue, ColumnType type)
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{
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if (type==NUMERIC)
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{
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Set(intValue);
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}
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else if (type==STRING)
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{
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Set(charValue);
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}
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else
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{
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Set(charValue, intValue);
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}
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isEmpty=false;
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}
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void Table::Cell::Clear(void)
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{
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if (isEmpty==false)
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delete [] c;
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isEmpty=true;
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}
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Table::ColumnDescriptor::ColumnDescriptor()
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{
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}
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Table::ColumnDescriptor::~ColumnDescriptor()
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{
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}
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Table::ColumnDescriptor::ColumnDescriptor(char cn[_TABLE_MAX_COLUMN_NAME_LENGTH], ColumnType ct)
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{
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columnType=ct;
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strcpy(columnName, cn);
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}
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void Table::Row::UpdateCell(unsigned columnIndex, int value)
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{
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cells[columnIndex]->Clear();
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cells[columnIndex]->Set(value);
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// cells[columnIndex]->i=value;
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// cells[columnIndex]->c=0;
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// cells[columnIndex]->isEmpty=false;
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}
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void Table::Row::UpdateCell(unsigned columnIndex, char *str)
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{
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cells[columnIndex]->Clear();
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cells[columnIndex]->Set(str);
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}
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void Table::Row::UpdateCell(unsigned columnIndex, int byteLength, char *data)
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{
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cells[columnIndex]->Clear();
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cells[columnIndex]->Set(data,byteLength);
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}
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Table::Table()
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{
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}
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Table::~Table()
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{
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Clear();
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}
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unsigned Table::AddColumn(char columnName[_TABLE_MAX_COLUMN_NAME_LENGTH], ColumnType columnType)
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{
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if (columnName[0]==0)
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return (unsigned) -1;
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// Add this column.
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columns.Insert(Table::ColumnDescriptor(columnName, columnType));
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// Extend the rows by one
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rows.ForEachData(ExtendRows);
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return columns.Size()-1;
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}
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void Table::RemoveColumn(unsigned columnIndex)
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{
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if (columnIndex >= columns.Size())
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return;
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columns.RemoveAtIndex(columnIndex);
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// Remove this index from each row.
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int i;
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DataStructures::Page<unsigned, Row*, _TABLE_BPLUS_TREE_ORDER> *cur = rows.GetListHead();
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while (cur)
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{
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for (i=0; i < cur->size; i++)
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{
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delete cur->data[i]->cells[columnIndex];
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cur->data[i]->cells.RemoveAtIndex(columnIndex);
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}
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cur=cur->next;
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}
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}
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unsigned Table::ColumnIndex(char columnName[_TABLE_MAX_COLUMN_NAME_LENGTH])
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{
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unsigned columnIndex;
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for (columnIndex=0; columnIndex<columns.Size(); columnIndex++)
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if (strcmp(columnName, columns[columnIndex].columnName)==0)
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return columnIndex;
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return (unsigned)-1;
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}
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char* Table::ColumnName(unsigned index)
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{
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if (index >= columns.Size())
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return 0;
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else
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return (char*)columns[index].columnName;
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}
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Table::ColumnType Table::GetColumnType(unsigned index)
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{
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if (index >= columns.Size())
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return (Table::ColumnType) 0;
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else
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return columns[index].columnType;
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}
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unsigned Table::GetColumnCount(void) const
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{
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return columns.Size();
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}
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unsigned Table::GetRowCount(void) const
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{
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return rows.Size();
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}
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Table::Row* Table::AddRow(unsigned rowId)
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{
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Row *newRow;
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newRow = new Row;
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if (rows.Insert(rowId, newRow)==false)
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{
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delete newRow;
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return 0; // Already exists
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}
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unsigned rowIndex;
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for (rowIndex=0; rowIndex < columns.Size(); rowIndex++)
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newRow->cells.Insert( new Table::Cell() );
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return newRow;
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}
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Table::Row* Table::AddRow(unsigned rowId, DataStructures::List<Cell> &initialCellValues)
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{
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Row *newRow = new Row;
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unsigned rowIndex;
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for (rowIndex=0; rowIndex < columns.Size(); rowIndex++)
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{
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if (rowIndex < initialCellValues.Size() && initialCellValues[rowIndex].isEmpty==false)
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newRow->cells.Insert(new Table::Cell(initialCellValues[rowIndex].i, initialCellValues[rowIndex].c, columns[rowIndex].columnType));
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else
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newRow->cells.Insert(new Table::Cell());
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}
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rows.Insert(rowId, newRow);
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return newRow;
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}
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Table::Row* Table::AddRowColumns(unsigned rowId, Row *row, DataStructures::List<unsigned> columnIndices)
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{
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Row *newRow = new Row;
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unsigned columnIndex;
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for (columnIndex=0; columnIndex < columnIndices.Size(); columnIndex++)
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{
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if (row->cells[columnIndices[columnIndex]]->isEmpty==false)
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{
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newRow->cells.Insert(new Table::Cell(
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row->cells[columnIndices[columnIndex]]->i,
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row->cells[columnIndices[columnIndex]]->c,
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columns[columnIndex].columnType
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));
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}
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else
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{
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newRow->cells.Insert(new Cell());
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}
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}
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rows.Insert(rowId, newRow);
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return newRow;
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}
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void Table::RemoveRow(unsigned rowId)
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{
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Row *out;
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if (rows.Delete(rowId, out))
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DeleteRow(out);
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}
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void Table::RemoveRows(Table *tableContainingRowIDs)
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{
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unsigned i;
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DataStructures::Page<unsigned, Row*, _TABLE_BPLUS_TREE_ORDER> *cur = tableContainingRowIDs->GetRows().GetListHead();
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while (cur)
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{
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for (i=0; i < (unsigned)cur->size; i++)
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{
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rows.Delete(cur->keys[i]);
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}
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cur=cur->next;
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}
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return;
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}
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bool Table::UpdateCell(unsigned rowId, unsigned columnIndex, int value)
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{
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assert(columns[columnIndex].columnType==NUMERIC);
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Row *row = GetRowByID(rowId);
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if (row)
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{
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row->UpdateCell(columnIndex, value);
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return true;
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}
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return false;
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}
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bool Table::UpdateCell(unsigned rowId, unsigned columnIndex, char *str)
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{
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assert(columns[columnIndex].columnType==STRING);
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Row *row = GetRowByID(rowId);
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if (row)
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{
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row->UpdateCell(columnIndex, str);
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return true;
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}
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return false;
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}
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bool Table::UpdateCell(unsigned rowId, unsigned columnIndex, int byteLength, char *data)
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{
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assert(columns[columnIndex].columnType==BINARY);
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Row *row = GetRowByID(rowId);
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if (row)
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{
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row->UpdateCell(columnIndex, byteLength, data);
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return true;
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}
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return false;
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}
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Table::FilterQuery::FilterQuery()
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{
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}
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Table::FilterQuery::~FilterQuery()
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{
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}
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Table::FilterQuery::FilterQuery(unsigned column, Cell *cell, FilterQueryType op)
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{
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columnIndex=column;
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cellValue=cell;
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operation=op;
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}
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Table::Row* Table::GetRowByID(unsigned rowId)
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{
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Row *row;
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if (rows.Get(rowId, row))
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return row;
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return 0;
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}
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Table::Row* Table::GetRowByIndex(unsigned rowIndex)
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{
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DataStructures::Page<unsigned, Row*, _TABLE_BPLUS_TREE_ORDER> *cur = rows.GetListHead();
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while (cur)
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{
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if (rowIndex < (unsigned)cur->size)
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return cur->data[rowIndex];
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if (rowIndex <= (unsigned)cur->size)
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rowIndex-=cur->size;
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else
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return 0;
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cur=cur->next;
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}
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return 0;
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}
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void Table::QueryTable(unsigned *columnSubset, unsigned numColumnSubset, FilterQuery *inclusionFilters, unsigned numInclusionFilters, unsigned *rowIds, unsigned numRowIDs, Table *result)
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{
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unsigned i;
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DataStructures::List<unsigned> columnIndicesToReturn;
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// Clear the result table.
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result->Clear();
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if (columnSubset && numColumnSubset>0)
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{
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for (i=0; i < numColumnSubset; i++)
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{
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if (columnSubset[i]>=0 && columnSubset[i]<columns.Size())
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columnIndicesToReturn.Insert(columnSubset[i]);
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}
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}
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else
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{
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for (i=0; i < columns.Size(); i++)
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columnIndicesToReturn.Insert(i);
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}
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if (columnIndicesToReturn.Size()==0)
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return; // No valid columns specified
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for (i=0; i < columnIndicesToReturn.Size(); i++)
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{
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result->AddColumn(columns[columnIndicesToReturn[i]].columnName,columns[columnIndicesToReturn[i]].columnType);
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}
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// Get the column indices of the filter queries.
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DataStructures::List<unsigned> inclusionFilterColumnIndices;
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if (inclusionFilters && numInclusionFilters>0)
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{
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for (i=0; i < numInclusionFilters; i++)
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{
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if (inclusionFilters[i].columnIndex>=0 && inclusionFilters[i].columnIndex<columns.Size())
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inclusionFilterColumnIndices.Insert(inclusionFilters[i].columnIndex);
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else
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inclusionFilterColumnIndices.Insert((unsigned)-1);
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}
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}
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if (rowIds==0 || numRowIDs==0)
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{
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// All rows
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DataStructures::Page<unsigned, Row*, _TABLE_BPLUS_TREE_ORDER> *cur = rows.GetListHead();
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while (cur)
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{
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for (i=0; i < (unsigned)cur->size; i++)
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{
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QueryRow(inclusionFilterColumnIndices, columnIndicesToReturn, cur->keys[i], cur->data[i], inclusionFilters, result);
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}
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cur=cur->next;
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}
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}
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else
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{
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// Specific rows
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Row *row;
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for (i=0; i < numRowIDs; i++)
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{
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if (rows.Get(rowIds[i], row))
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{
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QueryRow(inclusionFilterColumnIndices, columnIndicesToReturn, rowIds[i], row, inclusionFilters, result);
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}
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}
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}
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}
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void Table::QueryRow(DataStructures::List<unsigned> &inclusionFilterColumnIndices, DataStructures::List<unsigned> &columnIndicesToReturn, unsigned key, Table::Row* row, FilterQuery *inclusionFilters, Table *result)
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{
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bool pass;
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unsigned columnIndex;
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unsigned j;
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// If no inclusion filters, just add the row
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if (inclusionFilterColumnIndices.Size()==0)
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{
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result->AddRowColumns(key, row, columnIndicesToReturn);
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}
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else
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{
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// Go through all inclusion filters. Only add this row if all filters pass.
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for (j=0; j<inclusionFilterColumnIndices.Size(); j++)
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{
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columnIndex=inclusionFilterColumnIndices[j];
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if (row->cells[columnIndex]->isEmpty==false && columnIndex!=(unsigned)-1)
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{
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switch (inclusionFilters[j].operation)
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{
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case QF_EQUAL:
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switch(columns[inclusionFilterColumnIndices[j]].columnType)
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{
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case NUMERIC:
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pass=row->cells[columnIndex]->i==inclusionFilters[j].cellValue->i;
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break;
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case STRING:
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pass=strcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c)==0;
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break;
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case BINARY:
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pass=row->cells[columnIndex]->i==inclusionFilters[j].cellValue->i &&
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memcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c, row->cells[columnIndex]->i)==0;
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break;
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}
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break;
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case QF_NOT_EQUAL:
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switch(columns[inclusionFilterColumnIndices[j]].columnType)
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{
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case NUMERIC:
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pass=row->cells[columnIndex]->i!=inclusionFilters[j].cellValue->i;
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break;
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case STRING:
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pass=strcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c)!=0;
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break;
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case BINARY:
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pass=row->cells[columnIndex]->i==inclusionFilters[j].cellValue->i &&
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memcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c, row->cells[columnIndex]->i)==0;
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break;
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}
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break;
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case QF_GREATER_THAN:
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switch(columns[inclusionFilterColumnIndices[j]].columnType)
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{
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case NUMERIC:
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pass=row->cells[columnIndex]->i>inclusionFilters[j].cellValue->i;
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break;
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case STRING:
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pass=strcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c)>0;
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break;
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}
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break;
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case QF_LESS_THAN:
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switch(columns[inclusionFilterColumnIndices[j]].columnType)
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{
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case NUMERIC:
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pass=row->cells[columnIndex]->i<inclusionFilters[j].cellValue->i;
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break;
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case STRING:
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pass=strcmp(row->cells[columnIndex]->c,inclusionFilters[j].cellValue->c)<0;
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break;
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}
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break;
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case QF_IS_EMPTY:
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pass=false;
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break;
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case QF_NOT_EMPTY:
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pass=true;
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break;
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}
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}
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else
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{
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if (inclusionFilters[j].operation==QF_IS_EMPTY)
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pass=true;
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else
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pass=false; // No value for this cell
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}
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if (pass==false)
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break;
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}
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if (pass)
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{
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result->AddRowColumns(key, row, columnIndicesToReturn);
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}
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}
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}
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static Table::SortQuery *_sortQueries;
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static unsigned _numSortQueries;
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static DataStructures::List<unsigned> *_columnIndices;
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static DataStructures::List<Table::ColumnDescriptor> *_columns;
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int RowSort(Table::Row* const &first, Table::Row* const &second) // first is the one inserting, second is the one already there.
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{
|
|
unsigned i, columnIndex;
|
|
for (i=0; i<_numSortQueries; i++)
|
|
{
|
|
columnIndex=(*_columnIndices)[i];
|
|
if (columnIndex==(unsigned)-1)
|
|
continue;
|
|
|
|
if (first->cells[columnIndex]->isEmpty==true && second->cells[columnIndex]->isEmpty==false)
|
|
return 1; // Empty cells always go at the end
|
|
|
|
if (first->cells[columnIndex]->isEmpty==false && second->cells[columnIndex]->isEmpty==true)
|
|
return -1; // Empty cells always go at the end
|
|
|
|
if (_sortQueries[i].operation==Table::QS_INCREASING_ORDER)
|
|
{
|
|
if ((*_columns)[columnIndex].columnType==Table::NUMERIC)
|
|
{
|
|
if (first->cells[columnIndex]->i>second->cells[columnIndex]->i)
|
|
return 1;
|
|
if (first->cells[columnIndex]->i<second->cells[columnIndex]->i)
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
// String
|
|
if (strcmp(first->cells[columnIndex]->c,second->cells[columnIndex]->c)>0)
|
|
return 1;
|
|
if (strcmp(first->cells[columnIndex]->c,second->cells[columnIndex]->c)<0)
|
|
return -1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((*_columns)[columnIndex].columnType==Table::NUMERIC)
|
|
{
|
|
if (first->cells[columnIndex]->i<second->cells[columnIndex]->i)
|
|
return 1;
|
|
if (first->cells[columnIndex]->i>second->cells[columnIndex]->i)
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
// String
|
|
if (strcmp(first->cells[columnIndex]->c,second->cells[columnIndex]->c)<0)
|
|
return 1;
|
|
if (strcmp(first->cells[columnIndex]->c,second->cells[columnIndex]->c)>0)
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
void Table::SortTable(Table::SortQuery *sortQueries, unsigned numSortQueries, Table::Row** out)
|
|
{
|
|
unsigned i;
|
|
unsigned outLength;
|
|
DataStructures::List<unsigned> columnIndices;
|
|
_sortQueries=sortQueries;
|
|
_numSortQueries=numSortQueries;
|
|
_columnIndices=&columnIndices;
|
|
_columns=&columns;
|
|
bool anyValid=false;
|
|
|
|
for (i=0; i < numSortQueries; i++)
|
|
{
|
|
if (sortQueries[i].columnIndex>=0 && sortQueries[i].columnIndex<columns.Size() && columns[sortQueries[i].columnIndex].columnType!=BINARY)
|
|
{
|
|
columnIndices.Insert(sortQueries[i].columnIndex);
|
|
anyValid=true;
|
|
}
|
|
else
|
|
columnIndices.Insert((unsigned)-1); // Means don't check this column
|
|
}
|
|
|
|
DataStructures::Page<unsigned, Row*, _TABLE_BPLUS_TREE_ORDER> *cur;
|
|
cur = rows.GetListHead();
|
|
if (anyValid==false)
|
|
{
|
|
outLength=0;
|
|
while (cur)
|
|
{
|
|
for (i=0; i < (unsigned)cur->size; i++)
|
|
{
|
|
out[(outLength)++]=cur->data[i];
|
|
}
|
|
cur=cur->next;
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Start adding to ordered list.
|
|
DataStructures::OrderedList<Row*, Row*, RowSort> orderedList;
|
|
while (cur)
|
|
{
|
|
for (i=0; i < (unsigned)cur->size; i++)
|
|
{
|
|
orderedList.Insert(cur->data[i],cur->data[i]);
|
|
}
|
|
cur=cur->next;
|
|
}
|
|
|
|
outLength=0;
|
|
for (i=0; i < orderedList.Size(); i++)
|
|
out[(outLength)++]=orderedList[i];
|
|
}
|
|
void Table::PrintRow(char *out, int outLength, char columnDelineator, bool printDelineatorForBinary, Table::Row* inputRow)
|
|
{
|
|
if (outLength<=0)
|
|
return;
|
|
if (outLength==1)
|
|
{
|
|
*out=0;
|
|
return;
|
|
}
|
|
|
|
if (inputRow->cells.Size()!=columns.Size())
|
|
{
|
|
strncpy(out, "Cell width does not match column width.\n", outLength);
|
|
out[outLength-1]=0;
|
|
return;
|
|
}
|
|
|
|
char buff[512];
|
|
unsigned i;
|
|
int len;
|
|
out[0]=0;
|
|
for (i=0; i < columns.Size(); i++)
|
|
{
|
|
if (columns[i].columnType==NUMERIC)
|
|
{
|
|
if (inputRow->cells[i]->isEmpty==false)
|
|
{
|
|
sprintf(buff, "%i", inputRow->cells[i]->i);
|
|
len=(int)strlen(buff);
|
|
}
|
|
else
|
|
len=0;
|
|
if (i+1!=columns.Size())
|
|
buff[len++]=columnDelineator;
|
|
buff[len]=0;
|
|
}
|
|
else if (columns[i].columnType==STRING)
|
|
{
|
|
if (inputRow->cells[i]->isEmpty==false && inputRow->cells[i]->c)
|
|
{
|
|
strncpy(buff, inputRow->cells[i]->c, 512-2);
|
|
buff[512-2]=0;
|
|
len=(int)strlen(buff);
|
|
}
|
|
else
|
|
len=0;
|
|
if (i+1!=columns.Size())
|
|
buff[len++]=columnDelineator;
|
|
buff[len]=0;
|
|
}
|
|
else
|
|
{
|
|
if (printDelineatorForBinary)
|
|
{
|
|
if (i+1!=columns.Size())
|
|
buff[0]=columnDelineator;
|
|
buff[1]=0;
|
|
}
|
|
else
|
|
buff[0]=0;
|
|
|
|
}
|
|
|
|
len=(int)strlen(out);
|
|
if (outLength==len+1)
|
|
break;
|
|
strncpy(out+len, buff, outLength-len);
|
|
out[outLength-1]=0;
|
|
}
|
|
}
|
|
|
|
void Table::Clear(void)
|
|
{
|
|
rows.ForEachData(FreeRow);
|
|
rows.Clear();
|
|
columns.Clear(true);
|
|
}
|
|
List<Table::ColumnDescriptor>& Table::GetColumns(void)
|
|
{
|
|
return columns;
|
|
}
|
|
DataStructures::BPlusTree<unsigned, Table::Row*, _TABLE_BPLUS_TREE_ORDER>& Table::GetRows(void)
|
|
{
|
|
return rows;
|
|
}
|
|
DataStructures::Page<unsigned, DataStructures::Table::Row*, _TABLE_BPLUS_TREE_ORDER> * Table::GetListHead(void)
|
|
{
|
|
return rows.GetListHead();
|
|
}
|
|
void Table::DeleteRow(Table::Row *row)
|
|
{
|
|
unsigned rowIndex;
|
|
for (rowIndex=0; rowIndex < row->cells.Size(); rowIndex++)
|
|
{
|
|
delete row->cells[rowIndex];
|
|
}
|
|
delete row;
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
#pragma warning( pop )
|
|
#endif
|