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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.index.mapper;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.UnicodeUtil;
import org.elasticsearch.action.get.MultiGetRequest;
import org.elasticsearch.common.lucene.BytesRefs;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/**
*
*/
public final class Uid {
public static final char DELIMITER = '#';
public static final byte DELIMITER_BYTE = 0x23;
public static final BytesRef DELIMITER_BYTES = new BytesRef(new byte[]{DELIMITER_BYTE});
private final String type;
private final String id;
public Uid(String type, String id) {
this.type = type;
this.id = id;
}
public String type() {
return type;
}
public String id() {
return id;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Uid uid = (Uid) o;
if (id != null ? !id.equals(uid.id) : uid.id != null) return false;
if (type != null ? !type.equals(uid.type) : uid.type != null) return false;
return true;
}
@Override
public int hashCode() {
int result = type != null ? type.hashCode() : 0;
result = 31 * result + (id != null ? id.hashCode() : 0);
return result;
}
@Override
public String toString() {
return createUid(type, id);
}
public BytesRef toBytesRef() {
return createUidAsBytes(type, id);
}
public static BytesRef typePrefixAsBytes(BytesRef type) {
BytesRef bytesRef = new BytesRef(type.length + 1);
bytesRef.append(type);
bytesRef.append(DELIMITER_BYTES);
return bytesRef;
}
public static Uid createUid(String uid) {
int delimiterIndex = uid.indexOf(DELIMITER); // type is not allowed to have # in it..., ids can
return new Uid(uid.substring(0, delimiterIndex), uid.substring(delimiterIndex + 1));
}
public static BytesRef[] createUids(List items) {
BytesRef[] uids = new BytesRef[items.size()];
int idx = 0;
for (MultiGetRequest.Item item : items) {
uids[idx++] = createUidAsBytes(item);
}
return uids;
}
public static BytesRef createUidAsBytes(String type, String id) {
return createUidAsBytes(new BytesRef(type), new BytesRef(id));
}
public static BytesRef createUidAsBytes(String type, BytesRef id) {
return createUidAsBytes(new BytesRef(type), id);
}
public static BytesRef createUidAsBytes(MultiGetRequest.Item item) {
return createUidAsBytes(item.type(), item.id());
}
public static BytesRef createUidAsBytes(BytesRef type, BytesRef id) {
final BytesRef ref = new BytesRef(type.length + 1 + id.length);
System.arraycopy(type.bytes, type.offset, ref.bytes, 0, type.length);
ref.offset = type.length;
ref.bytes[ref.offset++] = DELIMITER_BYTE;
System.arraycopy(id.bytes, id.offset, ref.bytes, ref.offset, id.length);
ref.offset = 0;
ref.length = ref.bytes.length;
return ref;
}
public static void createUidAsBytes(BytesRef type, BytesRef id, BytesRef spare) {
spare.copyBytes(type);
spare.append(DELIMITER_BYTES);
spare.append(id);
}
public static BytesRef[] createTypeUids(Collection types, Object ids) {
return createTypeUids(types, Collections.singletonList(ids));
}
public static BytesRef[] createTypeUids(Collection types, List ids) {
final int numIds = ids.size();
BytesRef[] uids = new BytesRef[types.size() * ids.size()];
BytesRef typeBytes = new BytesRef();
BytesRef idBytes = new BytesRef();
int index = 0;
for (String type : types) {
UnicodeUtil.UTF16toUTF8(type, 0, type.length(), typeBytes);
for (int i = 0; i < numIds; i++, index++) {
uids[index] = Uid.createUidAsBytes(typeBytes, BytesRefs.toBytesRef(ids.get(i), idBytes));
}
}
return uids;
}
public static String createUid(String type, String id) {
return createUid(new StringBuilder(), type, id);
}
public static String createUid(StringBuilder sb, String type, String id) {
return sb.append(type).append(DELIMITER).append(id).toString();
}
public static boolean hasDelimiter(BytesRef uid) {
final int limit = uid.offset + uid.length;
for (int i = uid.offset; i < limit; i++) {
if (uid.bytes[i] == DELIMITER_BYTE) { // 0x23 is equal to '#'
return true;
}
}
return false;
}
public static BytesRef[] splitUidIntoTypeAndId(BytesRef uid) {
int loc = -1;
final int limit = uid.offset + uid.length;
for (int i = uid.offset; i < limit; i++) {
if (uid.bytes[i] == DELIMITER_BYTE) { // 0x23 is equal to '#'
loc = i;
break;
}
}
if (loc == -1) {
return null;
}
int idStart = loc + 1;
return new BytesRef[] {
new BytesRef(uid.bytes, uid.offset, loc - uid.offset),
new BytesRef(uid.bytes, idStart, limit - idStart)
};
}
}
