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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;
/**
* A query item which never matches. This is sometimes a useful output of query rewriting.
*
* @author bratseth
*/
public class FalseItem extends Item {
@Override
public void setIndexName(String index) { }
@Override
public ItemType getItemType() {
return ItemType.FALSE;
}
@Override
public String getName() { return "FALSE"; }
/** Override to only return "FALSE" rather than "FALSE " */
@Override
protected void appendHeadingString(StringBuilder buffer) {
buffer.append(getName());
}
@Override
public int encode(ByteBuffer buffer) {
super.encodeThis(buffer);
return 1;
}
@Override
public int getTermCount() { return 0; }
@Override
protected void appendBodyString(StringBuilder buffer) { }
}
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