boolean addToIndexConditions(Expression e) {
if (opType == OpTypes.EQUAL || opType == OpTypes.IS_NULL) {
if (indexedColumnCount < rangeIndex.getColumnCount()) {
if (rangeIndex.getColumns()[indexedColumnCount] == e.getLeftNode().getColumnIndex()) {
indexCond[indexedColumnCount] = e;
indexedColumnCount++;
opType = e.opType;
opTypeEnd = OpTypes.MAX;
return true;
}
}
}
return false;
}
private boolean addToIndexEndConditions(Expression e) {
if (opType == OpTypes.EQUAL || opType == OpTypes.IS_NULL) {
if (indexedColumnCount < rangeIndex.getColumnCount()) {
if (rangeIndex.getColumns()[indexedColumnCount] == e.getLeftNode().getColumnIndex()) {
Expression condition = ExpressionLogical.newNotNullCondition(e.getLeftNode());
indexCond[indexedColumnCount] = condition;
indexEndCond[indexedColumnCount] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opType = OpTypes.NOT;
opTypes[indexedColumnCount] = OpTypes.NOT;
opTypeEnd = e.opType;
opTypesEnd[indexedColumnCount] = e.opType;
indexedColumnCount++;
return true;
}
}
}
return false;
}
/**
* @param exprList list of expressions
* @param index Index to use
* @param colCount number of columns searched
*/
void addIndexCondition(Expression[] exprList, Index index, int colCount) {
int indexColCount = index.getColumnCount();
rangeIndex = index;
indexCond = new Expression[indexColCount];
indexEndCond = new Expression[indexColCount];
opTypes = new int[indexColCount];
opTypesEnd = new int[indexColCount];
opType = exprList[0].opType;
opTypes[0] = exprList[0].opType;
switch (opType) {
case OpTypes.NOT:
indexCond = exprList;
opTypeEnd = OpTypes.MAX;
opTypesEnd[0] = OpTypes.MAX;
break;
case OpTypes.GREATER:
case OpTypes.GREATER_EQUAL:
case OpTypes.GREATER_EQUAL_PRE:
indexCond = exprList;
if (exprList[0].getType() == OpTypes.GREATER_EQUAL_PRE) {
indexEndCond[0] = indexEndCondition = exprList[0].nodes[2];
}
opTypeEnd = OpTypes.MAX;
opTypesEnd[0] = OpTypes.MAX;
break;
case OpTypes.SMALLER:
case OpTypes.SMALLER_EQUAL:
{
Expression e = exprList[0].getLeftNode();
e = new ExpressionLogical(OpTypes.IS_NULL, e);
e = new ExpressionLogical(OpTypes.NOT, e);
indexCond[0] = e;
indexEndCond[0] = indexEndCondition = exprList[0];
opTypeEnd = opType;
opTypesEnd[0] = opType;
opType = OpTypes.NOT;
opTypes[0] = OpTypes.NOT;
break;
}
case OpTypes.IS_NULL:
case OpTypes.EQUAL:
{
indexCond = exprList;
for (int i = 0; i < colCount; i++) {
Expression e = exprList[i];
indexEndCond[i] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opType = e.opType;
opTypes[0] = e.opType;
opTypesEnd[0] = e.opType;
}
opTypeEnd = opType;
break;
}
default:
Error.runtimeError(ErrorCode.U_S0500, "RangeVariable");
}
indexedColumnCount = colCount;
hasIndex = true;
}
void addCondition(Expression e) {
if (e == null) {
return;
}
if (e instanceof ExpressionLogical) {
if (((ExpressionLogical) e).isTerminal) {
terminalCondition = e;
}
}
nonIndexCondition = ExpressionLogical.andExpressions(nonIndexCondition, e);
if (Expression.EXPR_FALSE.equals(nonIndexCondition)) {
isFalse = true;
}
if (rangeIndex == null || rangeIndex.getColumnCount() == 0) {
return;
}
if (indexedColumnCount == 0) {
return;
}
if (e.getIndexableExpression(rangeVar) == null) {
return;
}
int colIndex = e.getLeftNode().getColumnIndex();
int[] indexCols = rangeIndex.getColumns();
switch (e.getType()) {
case OpTypes.GREATER:
case OpTypes.GREATER_EQUAL:
case OpTypes.GREATER_EQUAL_PRE:
{
// replaces existing condition
if (opType == OpTypes.NOT) {
if (indexCols[indexedColumnCount - 1] == colIndex) {
nonIndexCondition =
ExpressionLogical.andExpressions(
nonIndexCondition, indexCond[indexedColumnCount - 1]);
indexCond[indexedColumnCount - 1] = e;
opType = e.opType;
opTypes[indexedColumnCount - 1] = e.opType;
if (e.getType() == OpTypes.GREATER_EQUAL_PRE && indexedColumnCount == 1) {
indexEndCond[indexedColumnCount - 1] =
ExpressionLogical.andExpressions(
indexEndCond[indexedColumnCount - 1], e.nodes[2]);
}
}
} else {
addToIndexConditions(e);
}
break;
}
case OpTypes.SMALLER:
case OpTypes.SMALLER_EQUAL:
{
if (opType == OpTypes.GREATER
|| opType == OpTypes.GREATER_EQUAL
|| opType == OpTypes.GREATER_EQUAL_PRE
|| opType == OpTypes.NOT) {
if (opTypeEnd != OpTypes.MAX) {
break;
}
if (indexCols[indexedColumnCount - 1] == colIndex) {
indexEndCond[indexedColumnCount - 1] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opTypeEnd = e.opType;
opTypesEnd[indexedColumnCount - 1] = e.opType;
}
} else {
addToIndexEndConditions(e);
}
break;
}
default:
}
}
