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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* Class representing a data field in the result set. a data field
* is basically the same thing as a string field, only that we
* treat it like a raw buffer. Well we SHOULD. we don't actually
* do so. yet. we should probably do some defensive copying and
* return a ByteBuffer...hmm...
*
*/
package com.yahoo.prelude.fastsearch;
import java.nio.ByteBuffer;
import com.yahoo.prelude.hitfield.RawData;
import com.yahoo.data.access.simple.Value;
import com.yahoo.data.access.Inspector;
/**
* @author Bjørn Borud
*/
public class DataField extends DocsumField implements VariableLengthField {
public DataField(String name) {
super(name);
}
private Object convert(byte[] value) {
return new RawData(value);
}
@Override
public Object decode(ByteBuffer b) {
int len = ((int) b.getShort()) & 0xffff;
byte[] tmp = new byte[len];
b.get(tmp);
return convert(tmp);
}
@Override
public Object decode(ByteBuffer b, FastHit hit) {
Object field = decode(b);
hit.setField(name, field);
return field;
}
@Override
public String toString() {
return "field " + getName() + " type data";
}
@Override
public int getLength(ByteBuffer b) {
int offset = b.position();
int len = ((int) b.getShort()) & 0xffff;
b.position(offset + len + (Short.SIZE >> 3));
return len + (Short.SIZE >> 3);
}
@Override
public int sizeOfLength() {
return Short.SIZE >> 3;
}
@Override
public Object convert(Inspector value) {
return convert(value.asData(Value.empty().asData()));
}
}
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