org.apache.jackrabbit.oak.plugins.index.property.PropertyIndexUtil Maven / Gradle / Ivy
/*
* 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.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashSet;
import java.util.Set;
import com.google.common.base.Charsets;
import org.apache.jackrabbit.oak.api.PropertyValue;
public class PropertyIndexUtil {
// TODO the max string length should be removed, or made configurable
private static final int MAX_STRING_LENGTH = 100;
/**
* name used when the indexed value is an empty string
*/
private static final String EMPTY_TOKEN = ":";
public static Set encode(PropertyValue value, ValuePattern pattern) {
return encode(ValuePatternUtil.read(value, pattern));
}
public static Set encode(Set set) {
if (set == null || set.isEmpty()) {
return set;
}
try {
Set values = new HashSet();
for(String v : set) {
if (v.length() > MAX_STRING_LENGTH) {
v = v.substring(0, MAX_STRING_LENGTH);
}
if (v.isEmpty()) {
v = EMPTY_TOKEN;
} else {
v = URLEncoder.encode(v, Charsets.UTF_8.name());
}
values.add(v);
}
return values;
} catch (UnsupportedEncodingException e) {
throw new IllegalStateException("UTF-8 is unsupported", e);
}
}
}