// =================================================================================================
// Copyright 2011 Twitter, Inc.
// -------------------------------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this work except in compliance with the License.
// You may obtain a copy of the License in the LICENSE file, or 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 com.twitter.common.text.util;
import java.io.IOException;
import org.apache.lucene.util.AttributeSource;
import com.twitter.common.text.token.attribute.TokenType;
import com.twitter.common.text.token.attribute.TokenTypeAttribute;
/**
* (De)Serializes {@link TokenTypeAttribute}s.
*/
public class TokenTypeAttributeSerializer implements TokenStreamSerializer.AttributeSerializer {
private TokenTypeAttribute tokenTypeAttribute;
@Override
public void initialize(AttributeSource attributeSource, TokenStreamSerializer.Version version)
throws IOException {
this.tokenTypeAttribute = attributeSource.addAttribute(TokenTypeAttribute.class);
}
@Override
public void serialize(TokenStreamSerializer.AttributeOutputStream output) throws IOException {
output.writeByte(tokenTypeAttribute.getType().ordinal());
}
@Override
public void deserialize(TokenStreamSerializer.AttributeInputStream input,
CharSequence charSequence) throws IOException {
tokenTypeAttribute.setType(TokenType.values()[input.readByte()]);
}
@Override
public TokenStreamSerializer.AttributeSerializer newInstance() {
return new TokenTypeAttributeSerializer();
}
}