Examples with InternalIgniteTable org.apache.ignite.internal.sql.engine.schema.InternalIgniteTable used on opensource projects

Example 6 with InternalIgniteTable

use of org.apache.ignite.internal.sql.engine.schema.InternalIgniteTable in project ignite-3 by apache.

the class LogicalOrToUnionRule method idxCollationCheck.

/**
 * Compares intersection (currently beginning position) of condition and index fields.
 * This rule need to be triggered only if appropriate indexes will be found otherwise it`s not applicable.
 *
 * @param call Set of appropriate RelNode.
 * @param operands Operands from OR expression.
 */
private boolean idxCollationCheck(RelOptRuleCall call, List<RexNode> operands) {
    final IgniteLogicalTableScan scan = call.rel(0);
    InternalIgniteTable tbl = scan.getTable().unwrap(InternalIgniteTable.class);
    IgniteTypeFactory typeFactory = Commons.typeFactory(scan.getCluster());
    int fieldCnt = tbl.getRowType(typeFactory).getFieldCount();
    BitSet idxsFirstFields = new BitSet(fieldCnt);
    for (IgniteIndex idx : tbl.indexes().values()) {
        List<RelFieldCollation> fieldCollations = idx.collation().getFieldCollations();
        if (!CollectionUtils.nullOrEmpty(fieldCollations)) {
            idxsFirstFields.set(fieldCollations.get(0).getFieldIndex());
        }
    }
    Mappings.TargetMapping mapping = scan.requiredColumns() == null ? null : Commons.inverseMapping(scan.requiredColumns(), fieldCnt);
    for (RexNode op : operands) {
        BitSet conditionFields = new BitSet(fieldCnt);
        new RexShuttle() {

            @Override
            public RexNode visitLocalRef(RexLocalRef inputRef) {
                conditionFields.set(mapping == null ? inputRef.getIndex() : mapping.getSourceOpt(inputRef.getIndex()));
                return inputRef;
            }
        }.apply(op);
        if (!conditionFields.intersects(idxsFirstFields)) {
            return false;
        }
    }
    return true;
}