| /* |
| * 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.jackrabbit.oak.query.ast; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| import javax.jcr.PropertyType; |
| |
| import org.apache.jackrabbit.oak.api.PropertyValue; |
| import org.apache.jackrabbit.oak.api.Type; |
| import org.apache.jackrabbit.oak.commons.PathUtils; |
| import org.apache.jackrabbit.oak.query.index.FilterImpl; |
| import org.apache.jackrabbit.oak.plugins.memory.PropertyValues; |
| import org.apache.jackrabbit.oak.spi.query.QueryConstants; |
| import org.apache.jackrabbit.oak.spi.query.QueryIndex.OrderEntry; |
| |
| /** |
| * The function "localname(..)". |
| */ |
| public class NodeLocalNameImpl extends DynamicOperandImpl { |
| |
| private final String selectorName; |
| private SelectorImpl selector; |
| |
| public NodeLocalNameImpl(String selectorName) { |
| this.selectorName = selectorName; |
| } |
| |
| @Override |
| boolean accept(AstVisitor v) { |
| return v.visit(this); |
| } |
| |
| @Override |
| public String toString() { |
| return "localname(" + quote(selectorName) + ')'; |
| } |
| |
| public void bindSelector(SourceImpl source) { |
| selector = source.getExistingSelector(selectorName); |
| } |
| |
| @Override |
| public PropertyExistenceImpl getPropertyExistence() { |
| return null; |
| } |
| |
| @Override |
| public Set<SelectorImpl> getSelectors() { |
| return Collections.singleton(selector); |
| } |
| |
| @Override |
| public PropertyValue currentProperty() { |
| String path = selector.currentPath(); |
| if (path == null) { |
| return null; |
| } |
| String name = PathUtils.getName(path); |
| String localName = getLocalName(name); |
| // TODO reverse namespace remapping? |
| return PropertyValues.newString(localName); |
| } |
| |
| static String getLocalName(String name) { |
| int colon = name.indexOf(':'); |
| // TODO LOCALNAME: evaluation of local name might not be correct |
| return colon < 0 ? name : name.substring(colon + 1); |
| } |
| |
| @Override |
| public void restrict(FilterImpl f, Operator operator, PropertyValue v) { |
| if (v == null) { |
| return; |
| } |
| if (operator == Operator.NOT_EQUAL && v != null) { |
| // not supported |
| return; |
| } |
| String name = NodeNameImpl.getName(query, v); |
| if (name != null && f.getSelector().equals(selector) |
| && NodeNameImpl.supportedOperator(operator)) { |
| f.restrictProperty(QueryConstants.RESTRICTION_LOCAL_NAME, |
| operator, PropertyValues.newString(name)); |
| } |
| } |
| |
| @Override |
| public void restrictList(FilterImpl f, List<PropertyValue> list) { |
| // optimizations of type "LOCALNAME(..) IN(A, B)" are not supported |
| } |
| |
| @Override |
| public String getFunction(SelectorImpl s) { |
| if (!s.equals(selector)) { |
| return null; |
| } |
| return "@" + QueryConstants.RESTRICTION_LOCAL_NAME; |
| } |
| |
| @Override |
| public boolean supportsRangeConditions() { |
| return false; |
| } |
| |
| @Override |
| public boolean canRestrictSelector(SelectorImpl s) { |
| return s.equals(selector); |
| } |
| |
| @Override |
| int getPropertyType() { |
| return PropertyType.STRING; |
| } |
| |
| @Override |
| public DynamicOperandImpl createCopy() { |
| return new NodeLocalNameImpl(selectorName); |
| } |
| |
| @Override |
| public OrderEntry getOrderEntry(SelectorImpl s, OrderingImpl o) { |
| if (!s.equals(selector)) { |
| // ordered by a different selector |
| return null; |
| } |
| return new OrderEntry( |
| QueryConstants.FUNCTION_RESTRICTION_PREFIX + getFunction(s), |
| Type.STRING, |
| o.isDescending() ? |
| OrderEntry.Order.DESCENDING : OrderEntry.Order.ASCENDING); |
| } |
| |
| } |