
org.elasticsearch.common.xcontent.json.JsonXContentGenerator Maven / Gradle / Ivy
/*
* 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.common.xcontent.json;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.io.SerializedString;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.io.Streams;
import org.elasticsearch.common.xcontent.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
*
*/
public class JsonXContentGenerator implements XContentGenerator {
protected final JsonGenerator generator;
private boolean writeLineFeedAtEnd;
public JsonXContentGenerator(JsonGenerator generator) {
this.generator = generator;
}
@Override
public XContentType contentType() {
return XContentType.JSON;
}
@Override
public void usePrettyPrint() {
generator.useDefaultPrettyPrinter();
}
@Override
public void usePrintLineFeedAtEnd() {
writeLineFeedAtEnd = true;
}
@Override
public void writeStartArray() throws IOException {
generator.writeStartArray();
}
@Override
public void writeEndArray() throws IOException {
generator.writeEndArray();
}
@Override
public void writeStartObject() throws IOException {
generator.writeStartObject();
}
@Override
public void writeEndObject() throws IOException {
generator.writeEndObject();
}
@Override
public void writeFieldName(String name) throws IOException {
generator.writeFieldName(name);
}
@Override
public void writeFieldName(XContentString name) throws IOException {
generator.writeFieldName(name);
}
@Override
public void writeString(String text) throws IOException {
generator.writeString(text);
}
@Override
public void writeString(char[] text, int offset, int len) throws IOException {
generator.writeString(text, offset, len);
}
@Override
public void writeUTF8String(byte[] text, int offset, int length) throws IOException {
generator.writeUTF8String(text, offset, length);
}
@Override
public void writeBinary(byte[] data, int offset, int len) throws IOException {
generator.writeBinary(data, offset, len);
}
@Override
public void writeBinary(byte[] data) throws IOException {
generator.writeBinary(data);
}
@Override
public void writeNumber(int v) throws IOException {
generator.writeNumber(v);
}
@Override
public void writeNumber(long v) throws IOException {
generator.writeNumber(v);
}
@Override
public void writeNumber(double d) throws IOException {
generator.writeNumber(d);
}
@Override
public void writeNumber(float f) throws IOException {
generator.writeNumber(f);
}
@Override
public void writeBoolean(boolean state) throws IOException {
generator.writeBoolean(state);
}
@Override
public void writeNull() throws IOException {
generator.writeNull();
}
@Override
public void writeStringField(String fieldName, String value) throws IOException {
generator.writeStringField(fieldName, value);
}
@Override
public void writeStringField(XContentString fieldName, String value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeString(value);
}
@Override
public void writeBooleanField(String fieldName, boolean value) throws IOException {
generator.writeBooleanField(fieldName, value);
}
@Override
public void writeBooleanField(XContentString fieldName, boolean value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeBoolean(value);
}
@Override
public void writeNullField(String fieldName) throws IOException {
generator.writeNullField(fieldName);
}
@Override
public void writeNullField(XContentString fieldName) throws IOException {
generator.writeFieldName(fieldName);
generator.writeNull();
}
@Override
public void writeNumberField(String fieldName, int value) throws IOException {
generator.writeNumberField(fieldName, value);
}
@Override
public void writeNumberField(XContentString fieldName, int value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeNumber(value);
}
@Override
public void writeNumberField(String fieldName, long value) throws IOException {
generator.writeNumberField(fieldName, value);
}
@Override
public void writeNumberField(XContentString fieldName, long value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeNumber(value);
}
@Override
public void writeNumberField(String fieldName, double value) throws IOException {
generator.writeNumberField(fieldName, value);
}
@Override
public void writeNumberField(XContentString fieldName, double value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeNumber(value);
}
@Override
public void writeNumberField(String fieldName, float value) throws IOException {
generator.writeNumberField(fieldName, value);
}
@Override
public void writeNumberField(XContentString fieldName, float value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeNumber(value);
}
@Override
public void writeBinaryField(String fieldName, byte[] data) throws IOException {
generator.writeBinaryField(fieldName, data);
}
@Override
public void writeBinaryField(XContentString fieldName, byte[] value) throws IOException {
generator.writeFieldName(fieldName);
generator.writeBinary(value);
}
@Override
public void writeArrayFieldStart(String fieldName) throws IOException {
generator.writeArrayFieldStart(fieldName);
}
@Override
public void writeArrayFieldStart(XContentString fieldName) throws IOException {
generator.writeFieldName(fieldName);
generator.writeStartArray();
}
@Override
public void writeObjectFieldStart(String fieldName) throws IOException {
generator.writeObjectFieldStart(fieldName);
}
@Override
public void writeObjectFieldStart(XContentString fieldName) throws IOException {
generator.writeFieldName(fieldName);
generator.writeStartObject();
}
@Override
public void writeRawField(String fieldName, byte[] content, OutputStream bos) throws IOException {
generator.writeRaw(", \"");
generator.writeRaw(fieldName);
generator.writeRaw("\" : ");
flush();
bos.write(content);
}
@Override
public void writeRawField(String fieldName, byte[] content, int offset, int length, OutputStream bos) throws IOException {
generator.writeRaw(", \"");
generator.writeRaw(fieldName);
generator.writeRaw("\" : ");
flush();
bos.write(content, offset, length);
}
@Override
public void writeRawField(String fieldName, InputStream content, OutputStream bos) throws IOException {
generator.writeRaw(", \"");
generator.writeRaw(fieldName);
generator.writeRaw("\" : ");
flush();
Streams.copy(content, bos);
}
@Override
public final void writeRawField(String fieldName, BytesReference content, OutputStream bos) throws IOException {
XContentType contentType = XContentFactory.xContentType(content);
if (contentType != null) {
writeObjectRaw(fieldName, content, bos);
} else {
writeFieldName(fieldName);
// we could potentially optimize this to not rely on exception logic...
String sValue = content.toUtf8();
try {
writeNumber(Long.parseLong(sValue));
} catch (NumberFormatException e) {
try {
writeNumber(Double.parseDouble(sValue));
} catch (NumberFormatException e1) {
writeString(sValue);
}
}
}
}
protected void writeObjectRaw(String fieldName, BytesReference content, OutputStream bos) throws IOException {
generator.writeRaw(", \"");
generator.writeRaw(fieldName);
generator.writeRaw("\" : ");
flush();
content.writeTo(bos);
}
@Override
public void copyCurrentStructure(XContentParser parser) throws IOException {
// the start of the parser
if (parser.currentToken() == null) {
parser.nextToken();
}
if (parser instanceof JsonXContentParser) {
generator.copyCurrentStructure(((JsonXContentParser) parser).parser);
} else {
XContentHelper.copyCurrentStructure(this, parser);
}
}
@Override
public void flush() throws IOException {
generator.flush();
}
@Override
public void close() throws IOException {
if (generator.isClosed()) {
return;
}
if (writeLineFeedAtEnd) {
flush();
generator.writeRaw(LF);
}
generator.close();
}
private static final SerializedString LF = new SerializedString("\n");
}
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