| /* |
| * 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.jsonitem; |
| |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.primitive.BooleanPointable; |
| import org.apache.hyracks.data.std.primitive.UTF8StringPointable; |
| import org.apache.hyracks.data.std.primitive.VoidPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.vxquery.datamodel.accessors.SequencePointable; |
| import org.apache.vxquery.datamodel.accessors.TaggedValuePointable; |
| import org.apache.vxquery.datamodel.builders.jsonitem.ArrayBuilder; |
| import org.apache.vxquery.datamodel.values.ValueTag; |
| import org.apache.vxquery.datamodel.values.XDMConstants; |
| import org.apache.vxquery.exceptions.ErrorCode; |
| import org.apache.vxquery.exceptions.SystemException; |
| |
| import java.io.IOException; |
| |
| public class ObjectConstructorScalarEvaluator extends AbstractObjectConstructorScalarEvaluator { |
| private IPointable vp; |
| private UTF8StringPointable sp; |
| private SequencePointable seqp; |
| private final BooleanPointable bp; |
| private final ArrayBuilder ab; |
| |
| public ObjectConstructorScalarEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) { |
| super(ctx, args); |
| vp = VoidPointable.FACTORY.createPointable(); |
| sp = (UTF8StringPointable) UTF8StringPointable.FACTORY.createPointable(); |
| seqp = (SequencePointable) SequencePointable.FACTORY.createPointable(); |
| bp = (BooleanPointable) BooleanPointable.FACTORY.createPointable(); |
| ab = new ArrayBuilder(); |
| } |
| |
| @Override |
| protected void evaluate(TaggedValuePointable[] args, IPointable result) throws SystemException { |
| TaggedValuePointable key, value, qmc, tvp; |
| ArrayBackedValueStorage abvsResult = abvsPool.takeOne(); |
| ArrayBackedValueStorage abvsItem = abvsPool.takeOne(); |
| try { |
| abvsResult.reset(); |
| ob.reset(abvsResult); |
| tvps.clear(); |
| int len = args.length; |
| for (int i = 0; i < len; i += 3) { |
| key = args[i]; |
| value = args[i + 1]; |
| qmc = args[i + 2]; |
| if (!isDuplicateKeys(key, tvps)) { |
| tvps.add(key); |
| key.getValue(sp); |
| if (value.getTag() == ValueTag.SEQUENCE_TAG) { |
| qmc.getValue(bp); |
| value.getValue(seqp); |
| if (seqp.getEntryCount() == 0) { |
| if (bp.getBoolean()) { |
| continue; |
| } |
| XDMConstants.setJsNull(value); |
| ob.addItem(sp, value); |
| } else { |
| abvsItem.reset(); |
| ab.reset(abvsItem); |
| int l = seqp.getEntryCount(); |
| for (int j = 0; j < l; j++) { |
| seqp.getEntry(j, value); |
| ab.addItem(value); |
| } |
| ab.finish(); |
| vp.set(abvsItem); |
| ob.addItem(sp, vp); |
| } |
| } else { |
| ob.addItem(sp, value); |
| } |
| } else { |
| throw new SystemException(ErrorCode.JNDY0003); |
| } |
| } |
| |
| ob.finish(); |
| result.set(abvsResult); |
| } catch (IOException e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } finally { |
| abvsPool.giveBack(abvsResult); |
| abvsPool.giveBack(abvsItem); |
| } |
| } |
| } |