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Example 1 with Order

use of org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.Order in project hive by apache.

the class ExprNodeConverter method getPSpec.

private PartitioningSpec getPSpec(RexWindow window) {
    PartitioningSpec partitioning = new PartitioningSpec();
    Schema schema = new Schema(tabAlias, inputRowType.getFieldList());
    if (window.partitionKeys != null && !window.partitionKeys.isEmpty()) {
        PartitionSpec pSpec = new PartitionSpec();
        for (RexNode pk : window.partitionKeys) {
            PartitionExpression exprSpec = new PartitionExpression();
            ASTNode astNode = pk.accept(new RexVisitor(schema));
            exprSpec.setExpression(astNode);
            pSpec.addExpression(exprSpec);
        }
        partitioning.setPartSpec(pSpec);
    }
    if (window.orderKeys != null && !window.orderKeys.isEmpty()) {
        OrderSpec oSpec = new OrderSpec();
        for (RexFieldCollation ok : window.orderKeys) {
            OrderExpression exprSpec = new OrderExpression();
            Order order = ok.getDirection() == RelFieldCollation.Direction.ASCENDING ? Order.ASC : Order.DESC;
            NullOrder nullOrder;
            if (ok.right.contains(SqlKind.NULLS_FIRST)) {
                nullOrder = NullOrder.NULLS_FIRST;
            } else if (ok.right.contains(SqlKind.NULLS_LAST)) {
                nullOrder = NullOrder.NULLS_LAST;
            } else {
                // Default
                nullOrder = ok.getDirection() == RelFieldCollation.Direction.ASCENDING ? NullOrder.NULLS_FIRST : NullOrder.NULLS_LAST;
            }
            exprSpec.setOrder(order);
            exprSpec.setNullOrder(nullOrder);
            ASTNode astNode = ok.left.accept(new RexVisitor(schema));
            exprSpec.setExpression(astNode);
            oSpec.addExpression(exprSpec);
        }
        partitioning.setOrderSpec(oSpec);
    }
    return partitioning;
}
Also used : NullOrder(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.NullOrder) Order(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.Order) OrderSpec(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderSpec) RexVisitor(org.apache.hadoop.hive.ql.optimizer.calcite.translator.ASTConverter.RexVisitor) PartitionExpression(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionExpression) OrderExpression(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderExpression) Schema(org.apache.hadoop.hive.ql.optimizer.calcite.translator.ASTConverter.Schema) ASTNode(org.apache.hadoop.hive.ql.parse.ASTNode) NullOrder(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.NullOrder) PartitionSpec(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionSpec) RexFieldCollation(org.apache.calcite.rex.RexFieldCollation) PartitioningSpec(org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitioningSpec) RexNode(org.apache.calcite.rex.RexNode)

Aggregations

RexFieldCollation (org.apache.calcite.rex.RexFieldCollation)1 RexNode (org.apache.calcite.rex.RexNode)1 RexVisitor (org.apache.hadoop.hive.ql.optimizer.calcite.translator.ASTConverter.RexVisitor)1 Schema (org.apache.hadoop.hive.ql.optimizer.calcite.translator.ASTConverter.Schema)1 ASTNode (org.apache.hadoop.hive.ql.parse.ASTNode)1 NullOrder (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.NullOrder)1 Order (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.Order)1 OrderExpression (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderExpression)1 OrderSpec (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.OrderSpec)1 PartitionExpression (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionExpression)1 PartitionSpec (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitionSpec)1 PartitioningSpec (org.apache.hadoop.hive.ql.parse.PTFInvocationSpec.PartitioningSpec)1