| /* |
| * 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.namepath.JcrNameParser; |
| import org.apache.jackrabbit.oak.query.QueryImpl; |
| 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; |
| import org.apache.jackrabbit.util.ISO9075; |
| |
| /** |
| * The function "name(..)". |
| */ |
| public class NodeNameImpl extends DynamicOperandImpl { |
| |
| private final String selectorName; |
| private SelectorImpl selector; |
| |
| public NodeNameImpl(String selectorName) { |
| this.selectorName = selectorName; |
| } |
| |
| @Override |
| boolean accept(AstVisitor v) { |
| return v.visit(this); |
| } |
| |
| @Override |
| public String toString() { |
| return "name(" + quote(selectorName) + ')'; |
| } |
| |
| public void bindSelector(SourceImpl source) { |
| selector = source.getExistingSelector(selectorName); |
| } |
| |
| @Override |
| public boolean supportsRangeConditions() { |
| return false; |
| } |
| |
| @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); |
| // TODO reverse namespace remapping? |
| return PropertyValues.newName(name); |
| } |
| |
| @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 = getName(query, v); |
| if (name != null && f.getSelector().equals(selector) |
| && NodeNameImpl.supportedOperator(operator)) { |
| String localName = NodeLocalNameImpl.getLocalName(name); |
| f.restrictProperty(QueryConstants.RESTRICTION_LOCAL_NAME, |
| operator, PropertyValues.newString(localName)); |
| } |
| } |
| |
| @Override |
| public void restrictList(FilterImpl f, List<PropertyValue> list) { |
| // optimizations of type "NAME(..) IN(A, B)" are not supported |
| } |
| |
| @Override |
| public String getFunction(SelectorImpl s) { |
| if (!s.equals(selector)) { |
| return null; |
| } |
| return "@" + QueryConstants.RESTRICTION_NAME; |
| } |
| |
| @Override |
| public boolean canRestrictSelector(SelectorImpl s) { |
| return s.equals(selector); |
| } |
| |
| /** |
| * Validate that the given value can be converted to a JCR name, and |
| * return the name. |
| * |
| * @param v the value |
| * @return name value, or {@code null} if the value can not be converted |
| */ |
| static String getName(QueryImpl query, PropertyValue v) { |
| // TODO correctly validate JCR names - see JCR 2.0 spec 3.2.4 Naming Restrictions |
| switch (v.getType().tag()) { |
| case PropertyType.DATE: |
| case PropertyType.DECIMAL: |
| case PropertyType.DOUBLE: |
| case PropertyType.LONG: |
| case PropertyType.BOOLEAN: |
| return null; |
| } |
| String name = v.getValue(Type.NAME); |
| // Name escaping (convert _x0020_ to space) |
| name = ISO9075.decode(name); |
| // normalize paths (./name > name) |
| if (query.getNamePathMapper() != null) { |
| String mappedName = query.getNamePathMapper().getOakPath(name); |
| if (mappedName == null) { |
| throw new IllegalArgumentException("Not a valid JCR name: " + name); |
| } |
| name = mappedName; |
| } |
| if (PathUtils.isAbsolute(name)) { |
| throw new IllegalArgumentException("Not a valid JCR name: " |
| + name + " (absolute paths are not names)"); |
| } else if (PathUtils.getDepth(name) > 1) { |
| throw new IllegalArgumentException("Not a valid JCR name: " |
| + name + " (relative path with depth > 1 are not names)"); |
| } else if (name.startsWith("[") && !name.endsWith("]")) { |
| return null; |
| } else if (!JcrNameParser.validate(name)) { |
| return null; |
| } |
| return name; |
| } |
| |
| static boolean supportedOperator(Operator o) { |
| return o == Operator.EQUAL || o == Operator.LIKE; |
| } |
| |
| @Override |
| int getPropertyType() { |
| return PropertyType.NAME; |
| } |
| |
| @Override |
| public DynamicOperandImpl createCopy() { |
| return new NodeNameImpl(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); |
| } |
| |
| } |