org.elasticsearch.index.mapper.ObjectMappers Maven / Gradle / Ivy
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* 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 com.google.common.collect.ImmutableList;
import com.google.common.collect.UnmodifiableIterator;
import org.elasticsearch.index.mapper.object.ObjectMapper;
/**
* A holder for several {@link org.elasticsearch.index.mapper.object.ObjectMapper}.
*/
public class ObjectMappers implements Iterable {
private final ImmutableList objectMappers;
private final boolean hasNested;
public ObjectMappers() {
this(ImmutableList.of());
}
public ObjectMappers(ObjectMapper objectMapper) {
this(new ObjectMapper[]{objectMapper});
}
public ObjectMappers(ObjectMapper[] objectMappers) {
this(ImmutableList.copyOf(objectMappers));
}
public ObjectMappers(ImmutableList objectMappers) {
this.objectMappers = objectMappers;
boolean hasNested = false;
for (ObjectMapper objectMapper : objectMappers) {
if (objectMapper.nested().isNested()) {
hasNested = true;
break;
}
}
this.hasNested = hasNested;
}
/**
* Is one of the object mappers has a nested mapping set?
*/
public boolean hasNested() {
return this.hasNested;
}
public ObjectMapper mapper() {
if (objectMappers.isEmpty()) {
return null;
}
return objectMappers.get(0);
}
public boolean isEmpty() {
return objectMappers.isEmpty();
}
public ImmutableList mappers() {
return this.objectMappers;
}
@Override
public UnmodifiableIterator iterator() {
return objectMappers.iterator();
}
/**
* Concats and returns a new {@link org.elasticsearch.index.mapper.ObjectMappers}.
*/
public ObjectMappers concat(ObjectMapper mapper) {
return new ObjectMappers(new ImmutableList.Builder().addAll(objectMappers).add(mapper).build());
}
/**
* Concats and returns a new {@link org.elasticsearch.index.mapper.ObjectMappers}.
*/
public ObjectMappers concat(ObjectMappers mappers) {
return new ObjectMappers(new ImmutableList.Builder().addAll(objectMappers).addAll(mappers).build());
}
public ObjectMappers remove(Iterable mappers) {
ImmutableList.Builder builder = new ImmutableList.Builder<>();
for (ObjectMapper objectMapper : objectMappers) {
boolean found = false;
for (ObjectMapper mapper : mappers) {
if (objectMapper == mapper) { // identify equality
found = true;
}
}
if (!found) {
builder.add(objectMapper);
}
}
return new ObjectMappers(builder.build());
}
public ObjectMappers remove(ObjectMapper mapper) {
ImmutableList.Builder builder = new ImmutableList.Builder<>();
for (ObjectMapper objectMapper : objectMappers) {
if (objectMapper != mapper) { // identify equality
builder.add(objectMapper);
}
}
return new ObjectMappers(builder.build());
}
}