Examples with OIndexReuseType com.orientechnologies.orient.core.sql.operator.OIndexReuseType used on opensource projects

Example 1 with OIndexReuseType

use of com.orientechnologies.orient.core.sql.operator.OIndexReuseType in project orientdb by orientechnologies.

the class OFilterOptimizer method optimize.

private OSQLFilterCondition optimize(OSQLFilterCondition condition, OIndexSearchResult indexMatch) {
    if (condition == null) {
        return null;
    }
    OQueryOperator operator = condition.getOperator();
    while (operator == null) {
        if (condition.getRight() == null && condition.getLeft() instanceof OSQLFilterCondition) {
            condition = (OSQLFilterCondition) condition.getLeft();
            operator = condition.getOperator();
        } else {
            return condition;
        }
    }
    final OIndexReuseType reuseType = operator.getIndexReuseType(condition.getLeft(), condition.getRight());
    switch(reuseType) {
        case INDEX_METHOD:
            if (isCovered(indexMatch, operator, condition.getLeft(), condition.getRight()) || isCovered(indexMatch, operator, condition.getRight(), condition.getLeft())) {
                return null;
            }
            return condition;
        case INDEX_INTERSECTION:
            if (condition.getLeft() instanceof OSQLFilterCondition)
                condition.setLeft(optimize((OSQLFilterCondition) condition.getLeft(), indexMatch));
            if (condition.getRight() instanceof OSQLFilterCondition)
                condition.setRight(optimize((OSQLFilterCondition) condition.getRight(), indexMatch));
            if (condition.getLeft() == null)
                return (OSQLFilterCondition) condition.getRight();
            if (condition.getRight() == null)
                return (OSQLFilterCondition) condition.getLeft();
            return condition;
        case INDEX_OPERATOR:
            if (isCovered(indexMatch, operator, condition.getLeft(), condition.getRight()) || isCovered(indexMatch, operator, condition.getRight(), condition.getLeft())) {
                return null;
            }
            return condition;
        default:
            return condition;
    }
}