com.hazelcast.shaded.org.apache.calcite.jdbc.CalciteStatement Maven / Gradle / Ivy
/*
* 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 com.hazelcast.shaded.org.apache.calcite.jdbc;
import com.hazelcast.shaded.org.apache.calcite.avatica.AvaticaStatement;
import com.hazelcast.shaded.org.apache.calcite.avatica.Meta;
import com.hazelcast.shaded.org.apache.calcite.avatica.NoSuchStatementException;
import com.hazelcast.shaded.org.apache.calcite.linq4j.Queryable;
import com.hazelcast.shaded.org.apache.calcite.server.CalciteServerStatement;
import com.hazelcast.shaded.org.checkerframework.checker.nullness.qual.Nullable;
import java.sql.SQLException;
/**
* Implementation of {@link java.sql.Statement}
* for the Calcite engine.
*/
public abstract class CalciteStatement extends AvaticaStatement {
/**
* Creates a CalciteStatement.
*
* @param connection Connection
* @param h Statement handle
* @param resultSetType Result set type
* @param resultSetConcurrency Result set concurrency
* @param resultSetHoldability Result set holdability
*/
CalciteStatement(CalciteConnectionImpl connection, Meta.@Nullable StatementHandle h,
int resultSetType, int resultSetConcurrency, int resultSetHoldability) {
super(connection, h, resultSetType, resultSetConcurrency,
resultSetHoldability);
}
// implement Statement
@Override public T unwrap(Class iface) throws SQLException {
if (iface == CalciteServerStatement.class) {
final CalciteServerStatement statement;
try {
statement = getConnection().server.getStatement(handle);
} catch (NoSuchStatementException e) {
throw new AssertionError("invalid statement", e);
}
return iface.cast(statement);
}
return super.unwrap(iface);
}
@Override public CalciteConnectionImpl getConnection() {
return (CalciteConnectionImpl) connection;
}
protected CalcitePrepare.CalciteSignature prepare(
Queryable queryable) {
final CalciteConnectionImpl calciteConnection = getConnection();
final CalcitePrepare prepare = calciteConnection.prepareFactory.get();
final CalciteServerStatement serverStatement;
try {
serverStatement = calciteConnection.server.getStatement(handle);
} catch (NoSuchStatementException e) {
throw new AssertionError("invalid statement", e);
}
final CalcitePrepare.Context prepareContext =
serverStatement.createPrepareContext();
return prepare.prepareQueryable(prepareContext, queryable);
}
@Override protected void close_() {
if (!closed) {
((CalciteConnectionImpl) connection).server.removeStatement(handle);
super.close_();
}
}
}
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