/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.index;
import org.h2.engine.SessionLocal;
import org.h2.message.DbException;
import org.h2.result.Row;
import org.h2.table.IndexColumn;
import org.h2.table.VirtualTable;
/**
* An base class for indexes of virtual tables.
*/
public abstract class VirtualTableIndex extends Index {
protected VirtualTableIndex(VirtualTable table, String name, IndexColumn[] columns) {
super(table, 0, name, columns, 0, IndexType.createNonUnique(true));
}
@Override
public void close(SessionLocal session) {
// nothing to do
}
@Override
public void add(SessionLocal session, Row row) {
throw DbException.getUnsupportedException("Virtual table");
}
@Override
public void remove(SessionLocal session, Row row) {
throw DbException.getUnsupportedException("Virtual table");
}
@Override
public void remove(SessionLocal session) {
throw DbException.getUnsupportedException("Virtual table");
}
@Override
public void truncate(SessionLocal session) {
throw DbException.getUnsupportedException("Virtual table");
}
@Override
public boolean needRebuild() {
return false;
}
@Override
public void checkRename() {
throw DbException.getUnsupportedException("Virtual table");
}
@Override
public long getRowCount(SessionLocal session) {
return table.getRowCount(session);
}
@Override
public long getRowCountApproximation(SessionLocal session) {
return table.getRowCountApproximation(session);
}
}