| /* |
| * 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.plugins.index.property; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| import org.apache.jackrabbit.oak.api.PropertyState; |
| import org.apache.jackrabbit.oak.api.Type; |
| import org.apache.jackrabbit.oak.plugins.index.IndexConstants; |
| import org.apache.jackrabbit.oak.spi.state.NodeBuilder; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| |
| /** |
| * A value pattern. |
| */ |
| public class ValuePattern { |
| public final static ValuePattern MATCH_ALL = new ValuePattern(); |
| |
| private final Pattern pattern; |
| private final Iterable<String> includePrefixes; |
| private final Iterable<String> excludePrefixes; |
| |
| public ValuePattern(NodeBuilder node) { |
| this(node.getString(IndexConstants.VALUE_PATTERN), |
| getStrings(node, IndexConstants.VALUE_INCLUDED_PREFIXES), |
| getStrings(node, IndexConstants.VALUE_EXCLUDED_PREFIXES)); |
| } |
| |
| public ValuePattern(NodeState node) { |
| this(node.getString(IndexConstants.VALUE_PATTERN), |
| getStrings(node, IndexConstants.VALUE_INCLUDED_PREFIXES), |
| getStrings(node, IndexConstants.VALUE_EXCLUDED_PREFIXES)); |
| } |
| |
| public ValuePattern() { |
| this(null, null, null); |
| } |
| |
| public ValuePattern(String pattern, |
| Iterable<String> includePrefixes, Iterable<String> excludePrefixes) { |
| Pattern p = pattern == null ? null : Pattern.compile(pattern); |
| this.includePrefixes = includePrefixes; |
| this.excludePrefixes = excludePrefixes; |
| this.pattern = p; |
| } |
| |
| public boolean matches(String v) { |
| if (matchesAll() || v == null) { |
| return true; |
| } |
| if (includePrefixes != null) { |
| for(String inc : includePrefixes) { |
| if (v.startsWith(inc)) { |
| return true; |
| } |
| } |
| } |
| if (excludePrefixes != null) { |
| for(String exc : excludePrefixes) { |
| if (v.startsWith(exc) || exc.startsWith(v)) { |
| return false; |
| } |
| } |
| } |
| if (includePrefixes != null && pattern == null) { |
| // we have include prefixes and no pattern |
| return false; |
| } |
| return pattern == null || pattern.matcher(v).matches(); |
| } |
| |
| public boolean matchesAll() { |
| return includePrefixes == null && excludePrefixes == null && pattern == null; |
| } |
| |
| public static Iterable<String> getStrings(NodeBuilder node, String propertyName) { |
| if (!node.hasProperty(propertyName)) { |
| return null; |
| } |
| PropertyState s = node.getProperty(propertyName); |
| if (s.isArray()) { |
| return node.getProperty(propertyName).getValue(Type.STRINGS); |
| } |
| return Collections.singleton(node.getString(propertyName)); |
| } |
| |
| public static Iterable<String> getStrings(NodeState node, String propertyName) { |
| if (!node.hasProperty(propertyName)) { |
| return null; |
| } |
| PropertyState s = node.getProperty(propertyName); |
| if (s.isArray()) { |
| return node.getStrings(propertyName); |
| } |
| return Collections.singleton(node.getString(propertyName)); |
| } |
| |
| public boolean matchesAll(Set<String> values) { |
| if (matchesAll() || values == null) { |
| return true; |
| } |
| for (String v : values) { |
| if (!matches(v)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public boolean matchesPrefix(String prefix) { |
| if (pattern != null) { |
| // with a regular expression pattern, we don't know |
| return false; |
| } |
| if (includePrefixes == null && excludePrefixes == null) { |
| // no includes and excludes |
| return true; |
| } |
| if (prefix == null || prefix.isEmpty()) { |
| // we just have "> x" or "< y": |
| // comparison is not supported |
| return false; |
| } |
| if (includePrefixes != null) { |
| for(String inc : includePrefixes) { |
| if (prefix.startsWith(inc)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| if (excludePrefixes != null) { |
| for(String exc : excludePrefixes) { |
| if (prefix.startsWith(exc) || exc.startsWith(prefix)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| } |