| /* |
| * 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.context; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.xml.namespace.QName; |
| |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.api.IValueReference; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| |
| public class DynamicContextImpl implements DynamicContext { |
| private StaticContext sCtx; |
| |
| private final Map<QName, ArrayBackedValueStorage> variables; |
| |
| private byte[] currentDateTime; |
| |
| public DynamicContextImpl(StaticContext sCtx) { |
| this.sCtx = sCtx; |
| variables = new HashMap<QName, ArrayBackedValueStorage>(); |
| } |
| |
| public IDynamicContextFactory createFactory() { |
| return DynamicContextImplFactory.createInstance(this); |
| } |
| |
| @Override |
| public StaticContext getStaticContext() { |
| return sCtx; |
| } |
| |
| @Override |
| public void setCurrentDateTime(IValueReference value) { |
| if (currentDateTime == null) { |
| currentDateTime = new byte[value.getLength()]; |
| } |
| System.arraycopy(value.getByteArray(), value.getStartOffset(), currentDateTime, 0, value.getLength()); |
| } |
| |
| @Override |
| public void getCurrentDateTime(IPointable value) { |
| value.set(currentDateTime, 0, currentDateTime.length); |
| } |
| |
| @Override |
| public void bindVariable(QName var, IValueReference value) { |
| ArrayBackedValueStorage abvs = variables.get(var); |
| if (abvs == null) { |
| abvs = new ArrayBackedValueStorage(); |
| variables.put(var, abvs); |
| } |
| abvs.assign(value); |
| } |
| |
| @Override |
| public void lookupVariable(QName var, IPointable value) { |
| ArrayBackedValueStorage abvs = variables.get(var); |
| if (abvs == null) { |
| value.set(null, -1, -1); |
| } else { |
| value.set(abvs); |
| } |
| } |
| |
| Map<QName, ArrayBackedValueStorage> getVariableMap() { |
| return variables; |
| } |
| } |