org.elasticsearch.common.xcontent.json.JsonXContentParser 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.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.UnicodeUtil;
import org.elasticsearch.ElasticsearchIllegalStateException;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.common.xcontent.support.AbstractXContentParser;
import java.io.IOException;
/**
*
*/
public class JsonXContentParser extends AbstractXContentParser {
final JsonParser parser;
public JsonXContentParser(JsonParser parser) {
this.parser = parser;
}
@Override
public XContentType contentType() {
return XContentType.JSON;
}
@Override
public Token nextToken() throws IOException {
return convertToken(parser.nextToken());
}
@Override
public void skipChildren() throws IOException {
parser.skipChildren();
}
@Override
public Token currentToken() {
return convertToken(parser.getCurrentToken());
}
@Override
public NumberType numberType() throws IOException {
return convertNumberType(parser.getNumberType());
}
@Override
public boolean estimatedNumberType() {
return true;
}
@Override
public String currentName() throws IOException {
return parser.getCurrentName();
}
@Override
protected boolean doBooleanValue() throws IOException {
return parser.getBooleanValue();
}
@Override
public String text() throws IOException {
return parser.getText();
}
@Override
public BytesRef bytes() throws IOException {
BytesRef bytes = new BytesRef();
UnicodeUtil.UTF16toUTF8(parser.getTextCharacters(), parser.getTextOffset(), parser.getTextLength(), bytes);
return bytes;
}
@Override
public Object objectText() throws IOException {
JsonToken currentToken = parser.getCurrentToken();
if (currentToken == JsonToken.VALUE_STRING) {
return text();
} else if (currentToken == JsonToken.VALUE_NUMBER_INT || currentToken == JsonToken.VALUE_NUMBER_FLOAT) {
return parser.getNumberValue();
} else if (currentToken == JsonToken.VALUE_TRUE) {
return Boolean.TRUE;
} else if (currentToken == JsonToken.VALUE_FALSE) {
return Boolean.FALSE;
} else if (currentToken == JsonToken.VALUE_NULL) {
return null;
} else {
return text();
}
}
@Override
public Object objectBytes() throws IOException {
JsonToken currentToken = parser.getCurrentToken();
if (currentToken == JsonToken.VALUE_STRING) {
return bytes();
} else if (currentToken == JsonToken.VALUE_NUMBER_INT || currentToken == JsonToken.VALUE_NUMBER_FLOAT) {
return parser.getNumberValue();
} else if (currentToken == JsonToken.VALUE_TRUE) {
return Boolean.TRUE;
} else if (currentToken == JsonToken.VALUE_FALSE) {
return Boolean.FALSE;
} else if (currentToken == JsonToken.VALUE_NULL) {
return null;
} else {
return bytes();
}
}
@Override
public boolean hasTextCharacters() {
return parser.hasTextCharacters();
}
@Override
public char[] textCharacters() throws IOException {
return parser.getTextCharacters();
}
@Override
public int textLength() throws IOException {
return parser.getTextLength();
}
@Override
public int textOffset() throws IOException {
return parser.getTextOffset();
}
@Override
public Number numberValue() throws IOException {
return parser.getNumberValue();
}
@Override
public short doShortValue() throws IOException {
return parser.getShortValue();
}
@Override
public int doIntValue() throws IOException {
return parser.getIntValue();
}
@Override
public long doLongValue() throws IOException {
return parser.getLongValue();
}
@Override
public float doFloatValue() throws IOException {
return parser.getFloatValue();
}
@Override
public double doDoubleValue() throws IOException {
return parser.getDoubleValue();
}
@Override
public byte[] binaryValue() throws IOException {
return parser.getBinaryValue();
}
@Override
public void close() {
try {
parser.close();
} catch (IOException e) {
// ignore
}
}
private NumberType convertNumberType(JsonParser.NumberType numberType) {
switch (numberType) {
case INT:
return NumberType.INT;
case LONG:
return NumberType.LONG;
case FLOAT:
return NumberType.FLOAT;
case DOUBLE:
return NumberType.DOUBLE;
}
throw new ElasticsearchIllegalStateException("No matching token for number_type [" + numberType + "]");
}
private Token convertToken(JsonToken token) {
if (token == null) {
return null;
}
switch (token) {
case FIELD_NAME:
return Token.FIELD_NAME;
case VALUE_FALSE:
case VALUE_TRUE:
return Token.VALUE_BOOLEAN;
case VALUE_STRING:
return Token.VALUE_STRING;
case VALUE_NUMBER_INT:
case VALUE_NUMBER_FLOAT:
return Token.VALUE_NUMBER;
case VALUE_NULL:
return Token.VALUE_NULL;
case START_OBJECT:
return Token.START_OBJECT;
case END_OBJECT:
return Token.END_OBJECT;
case START_ARRAY:
return Token.START_ARRAY;
case END_ARRAY:
return Token.END_ARRAY;
case VALUE_EMBEDDED_OBJECT:
return Token.VALUE_EMBEDDED_OBJECT;
}
throw new ElasticsearchIllegalStateException("No matching token for json_token [" + token + "]");
}
}