org.h2.result.SimpleRowValue 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.engine.Constants;
import org.h2.value.Value;
/**
* A simple row that contains data for only one column.
*/
public class SimpleRowValue implements SearchRow {
private long key;
private int version;
private int index;
private final int virtualColumnCount;
private Value data;
public SimpleRowValue(int columnCount) {
this.virtualColumnCount = columnCount;
}
@Override
public void setKeyAndVersion(SearchRow row) {
key = row.getKey();
version = row.getVersion();
}
@Override
public int getVersion() {
return version;
}
@Override
public int getColumnCount() {
return virtualColumnCount;
}
@Override
public long getKey() {
return key;
}
@Override
public void setKey(long key) {
this.key = key;
}
@Override
public Value getValue(int idx) {
return idx == index ? data : null;
}
@Override
public void setValue(int idx, Value v) {
index = idx;
data = v;
}
@Override
public String toString() {
return "( /* " + key + " */ " + (data == null ?
"null" : data.getTraceSQL()) + " )";
}
@Override
public int getMemory() {
return Constants.MEMORY_OBJECT + (data == null ? 0 : data.getMemory());
}
}