/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.internal.processors.query.h2.sql;
import java.util.Collections;
import java.util.List;
import org.apache.ignite.internal.processors.query.h2.opt.GridH2Table;
import org.apache.ignite.internal.util.typedef.internal.SB;
import org.h2.command.Parser;
import org.h2.table.Table;
import org.jetbrains.annotations.Nullable;
/**
* Table with optional schema.
*/
public class GridSqlTable extends GridSqlElement {
/** */
private final String schema;
/** */
private final String tblName;
/** */
private final GridH2Table tbl;
/** */
private List<String> useIndexes;
/**
* @param schema Schema.
* @param tblName Table name.
*/
public GridSqlTable(@Nullable String schema, String tblName) {
this(schema, tblName, null);
}
/**
* @param tbl Table.
*/
public GridSqlTable(Table tbl) {
this(tbl.getSchema().getName(), tbl.getName(), tbl);
}
/**
* @param schema Schema.
* @param tblName Table name.
* @param tbl H2 Table.
*/
private GridSqlTable(@Nullable String schema, String tblName, @Nullable Table tbl) {
super(Collections.<GridSqlAst>emptyList());
assert schema != null : "schema";
assert tblName != null : "tblName";
this.schema = schema;
this.tblName = tblName;
this.tbl = tbl instanceof GridH2Table ? (GridH2Table)tbl : null;
}
/** {@inheritDoc} */
@Override public String getSQL() {
return getBeforeAliasSql() + getAfterAliasSQL();
}
/**
* @return SQL for the table before alias.
*/
public String getBeforeAliasSql() {
if (schema == null)
return Parser.quoteIdentifier(tblName);
return Parser.quoteIdentifier(schema) + '.' + Parser.quoteIdentifier(tblName);
}
/**
* @return SQL for the table after alias.
*/
public String getAfterAliasSQL() {
if (useIndexes == null)
return "";
SB b = new SB();
b.a(" USE INDEX (");
boolean first = true;
for (String idx : useIndexes) {
if (first)
first = false;
else
b.a(", ");
b.a(Parser.quoteIdentifier(idx));
}
b.a(')');
return b.toString();
}
/**
* @param useIndexes List of indexes.
*/
public void useIndexes(List<String> useIndexes) {
this.useIndexes = useIndexes;
}
/**
* @return Schema.
*/
public String schema() {
return schema;
}
/**
* @return Table name.
*/
public String tableName() {
return tblName;
}
/**
* @return Referenced data table.
*/
public GridH2Table dataTable() {
return tbl;
}
/** {@inheritDoc} */
@Override public boolean equals(Object o) {
if (!super.equals(o))
return false;
GridSqlTable that = (GridSqlTable)o;
return schema.equals(that.schema) && tblName.equals(that.tblName);
}
/** {@inheritDoc} */
@Override public int hashCode() {
int result = 1;
result = 31 * result + schema.hashCode();
result = 31 * result + tblName.hashCode();
return result;
}
}