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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 place holder for null queries to make searchers easier to write.
*
* @author Steinar Knutsen
*/
public class NullItem extends Item {
public NullItem() {}
/** Does nothing */
public void setIndexName(String index) {}
public int encode(ByteBuffer buffer) {
throw new RuntimeException(
"A NullItem was attempted encoded. "
+ "This is probably a misbehaving " + "searcher.");
}
public ItemType getItemType() {
throw new RuntimeException(
"Packet code access attempted. "
+ "A NullItem has no packet code. "
+ "This is probably a misbehaving " + "searcher.");
}
public void appendBodyString(StringBuilder buffer) {
// No body for this Item
return;
}
public void appendHeadingString(StringBuilder buffer) {
buffer.append(getName());
}
public String getName() {
return "NULL";
}
@Override
public int getTermCount() { return 0; }
}
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