/*
* 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.hadoop.serialization.builder;
import java.io.OutputStream;
import org.elasticsearch.hadoop.serialization.EsHadoopSerializationException;
import org.elasticsearch.hadoop.serialization.Generator;
import org.elasticsearch.hadoop.serialization.json.JacksonJsonGenerator;
import org.elasticsearch.hadoop.util.Assert;
import org.elasticsearch.hadoop.util.FastByteArrayOutputStream;
@SuppressWarnings("rawtypes")
public class ContentBuilder {
private final Generator generator;
private final ValueWriter writer;
private ContentBuilder(Generator generator, ValueWriter writer) {
Assert.notNull(generator);
this.generator = generator;
this.writer = writer;
}
public static ContentBuilder generate(ValueWriter writer) {
return new ContentBuilder(new JacksonJsonGenerator(new FastByteArrayOutputStream()), writer);
}
public static ContentBuilder generate(OutputStream bos, ValueWriter writer) {
return new ContentBuilder(new JacksonJsonGenerator(bos), writer);
}
public ContentBuilder nullValue() {
generator.writeNull();
return this;
}
public ContentBuilder field(String name, String value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeString(value);
}
return this;
}
public ContentBuilder field(String name, byte[] value) {
field(name);
generator.writeBinary(value);
return this;
}
public ContentBuilder field(String name, byte[] value, int offset, int len) {
field(name);
generator.writeBinary(value, offset, len);
return this;
}
public ContentBuilder field(String name, boolean value) {
field(name);
generator.writeBoolean(value);
return this;
}
public ContentBuilder field(String name, Boolean value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeBoolean(value.booleanValue());
}
return this;
}
public ContentBuilder field(String name, short value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Short value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.shortValue());
}
return this;
}
public ContentBuilder field(String name, byte value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Byte value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.byteValue());
}
return this;
}
public ContentBuilder field(String name, int value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Integer value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.intValue());
}
return this;
}
public ContentBuilder field(String name, long value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Long value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.longValue());
}
return this;
}
public ContentBuilder field(String name, float value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Float value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.floatValue());
}
return this;
}
public ContentBuilder field(String name, double value) {
field(name);
generator.writeNumber(value);
return this;
}
public ContentBuilder field(String name, Double value) {
field(name);
if (value == null) {
generator.writeNull();
}
else {
generator.writeNumber(value.doubleValue());
}
return this;
}
public ContentBuilder field(String name, Iterable<?> value) {
startArray(name);
for (Object o : value) {
value(o);
}
endArray();
return this;
}
public ContentBuilder field(String name, Object... value) {
startArray(name);
for (Object o : value) {
value(o);
}
endArray();
return this;
}
public ContentBuilder startObject() {
generator.writeBeginObject();
return this;
}
public ContentBuilder endObject() {
generator.writeEndObject();
return this;
}
public ContentBuilder startArray() {
generator.writeBeginArray();
return this;
}
public ContentBuilder endArray() {
generator.writeEndArray();
return this;
}
public ContentBuilder startArray(String name) {
field(name);
startArray();
return this;
}
public ContentBuilder field(String name) {
generator.writeFieldName(name);
return this;
}
public ContentBuilder field(String name, Object value) {
field(name);
value(value);
return this;
}
@SuppressWarnings("unchecked")
public ContentBuilder value(Object value) {
if (!writer.write(value, generator)) {
throw new EsHadoopSerializationException(String.format("Cannot handle type [%s], instance [%s] using writer [%s]", value.getClass(), value, writer));
}
return this;
}
public ContentBuilder flush() {
generator.flush();
return this;
}
public OutputStream content() {
return (OutputStream) generator.getOutputTarget();
}
public void close() {
generator.close();
}
}