org.h2.result.SearchRow Maven / Gradle / Ivy
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.result;
import org.h2.value.Value;
/**
* The interface for rows stored in a table, and for partial rows stored in the
* index.
*/
public interface SearchRow {
/**
* An empty array of SearchRow objects.
*/
SearchRow[] EMPTY_ARRAY = {};
/**
* Get the column count.
*
* @return the column count
*/
int getColumnCount();
/**
* Get the value for the column
*
* @param index the column number (starting with 0)
* @return the value
*/
Value getValue(int index);
/**
* Set the value for given column
*
* @param index the column number (starting with 0)
* @param v the new value
*/
void setValue(int index, Value v);
/**
* Set the position and version to match another row.
*
* @param old the other row.
*/
void setKeyAndVersion(SearchRow old);
/**
* Get the version of the row.
*
* @return the version
*/
int getVersion();
/**
* Set the unique key of the row.
*
* @param key the key
*/
void setKey(long key);
/**
* Get the unique key of the row.
*
* @return the key
*/
long getKey();
/**
* Get the estimated memory used for this row, in bytes.
*
* @return the memory
*/
int getMemory();
}