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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.prelude.query;
import java.nio.ByteBuffer;
/**
* An item which cannot provide its own index (field) name, but will always query the index
* specified by the parent item it is added to.
* It's more efficient to use pure items where possible instead of
* {@link TermItem} children ({@link WordItem}, {@link IntItem})
* who each carry their own index name.
*
* @author baldersheim
*/
public abstract class PureWeightedItem extends Item {
public PureWeightedItem(int weight) {
setWeight(weight);
}
/** Ignored. */
@Override
public void setIndexName(String index) {
// No index
}
@Override
public String getName() {
return getItemType().name();
}
@Override
public int encode(ByteBuffer buffer) {
encodeThis(buffer);
return 1;
}
@Override
protected void appendBodyString(StringBuilder buffer) {
buffer.append(':').append(getWeight());
}
}
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