vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/json/KeysOrMembersUnnestingEvaluator.java

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.vxquery.runtime.functions.json;

import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
import org.apache.hyracks.api.context.IHyracksTaskContext;
import org.apache.hyracks.api.exceptions.HyracksDataException;
import org.apache.hyracks.data.std.api.IPointable;
import org.apache.vxquery.datamodel.accessors.TaggedValuePointable;
import org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentUnnestingEvaluator;

public class KeysOrMembersUnnestingEvaluator extends AbstractTaggedValueArgumentUnnestingEvaluator {
    private final KeysOrMembersUnnesting keysOrMembersStep;

    public KeysOrMembersUnnestingEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) {
        super(args);
        keysOrMembersStep = new KeysOrMembersUnnesting(ctx, ppool);
    }

    @Override
    public boolean step(IPointable result) throws HyracksDataException {
        return keysOrMembersStep.step(result);
    }

    @Override
    protected void init(TaggedValuePointable[] args) throws HyracksDataException {
        keysOrMembersStep.init(args);

    }
}