/*
* Licensed 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
*
*
*
*
*
*
*
*
*
*
*
*
*/
package org.jooq.impl;
import static java.util.Arrays.asList;
import static org.jooq.Clause.ALTER_VIEW;
import static org.jooq.Clause.ALTER_VIEW_RENAME;
import static org.jooq.Clause.ALTER_VIEW_VIEW;
// ...
// ...
import static org.jooq.SQLDialect.CUBRID;
// ...
import static org.jooq.SQLDialect.DERBY;
import static org.jooq.SQLDialect.FIREBIRD;
import static org.jooq.SQLDialect.HSQLDB;
// ...
// ...
import static org.jooq.impl.DSL.name;
import static org.jooq.impl.Keywords.K_ALTER;
import static org.jooq.impl.Keywords.K_IF_EXISTS;
import static org.jooq.impl.Keywords.K_RENAME;
import static org.jooq.impl.Keywords.K_RENAME_TO;
import static org.jooq.impl.Keywords.K_TABLE;
import static org.jooq.impl.Keywords.K_TO;
import static org.jooq.impl.Keywords.K_VIEW;
import org.jooq.AlterViewFinalStep;
import org.jooq.AlterViewStep;
import org.jooq.Clause;
import org.jooq.Configuration;
import org.jooq.Context;
import org.jooq.Name;
import org.jooq.Table;
/**
* @author Lukas Eder
*/
final class AlterViewImpl extends AbstractQuery implements
// Cascading interface implementations for ALTER VIEW behaviour
AlterViewStep,
AlterViewFinalStep {
/**
* Generated UID
*/
private static final long serialVersionUID = 8904572826501186329L;
private static final Clause[] CLAUSES = { ALTER_VIEW };
private final Table<?> view;
private final boolean ifExists;
private Table<?> renameTo;
AlterViewImpl(Configuration configuration, Table<?> view) {
this(configuration, view, false);
}
AlterViewImpl(Configuration configuration, Table<?> view, boolean ifExists) {
super(configuration);
this.view = view;
this.ifExists = ifExists;
}
// ------------------------------------------------------------------------
// XXX: DSL API
// ------------------------------------------------------------------------
@Override
public final AlterViewImpl renameTo(Table<?> newName) {
this.renameTo = newName;
return this;
}
@Override
public final AlterViewImpl renameTo(Name newName) {
return renameTo(DSL.table(newName));
}
@Override
public final AlterViewImpl renameTo(String newName) {
return renameTo(name(newName));
}
// ------------------------------------------------------------------------
// XXX: QueryPart API
// ------------------------------------------------------------------------
private final boolean supportsIfExists(Context<?> ctx) {
return !asList(CUBRID, DERBY, FIREBIRD).contains(ctx.family());
}
@Override
public final void accept(Context<?> ctx) {
if (ifExists && !supportsIfExists(ctx)) {
Tools.executeImmediateIfExistsBegin(ctx, DDLStatementType.ALTER_VIEW, view);
accept0(ctx);
Tools.executeImmediateIfExistsEnd(ctx, DDLStatementType.ALTER_VIEW, view);
}
else {
accept0(ctx);
}
}
private final void accept0(Context<?> ctx) {
switch (ctx.family()) {
default:
accept1(ctx);
break;
}
}
private final void accept1(Context<?> ctx) {
ctx.start(ALTER_VIEW_VIEW)
.visit(K_ALTER).sql(' ')
.visit(ctx.family() == HSQLDB ? K_TABLE : K_VIEW);
if (ifExists && supportsIfExists(ctx))
ctx.sql(' ').visit(K_IF_EXISTS);
ctx.sql(' ').visit(view)
.end(ALTER_VIEW_VIEW)
.formatIndentStart()
.formatSeparator();
if (renameTo != null) {
boolean qualify = ctx.qualify();
ctx.start(ALTER_VIEW_RENAME)
.qualify(false)
.visit(K_RENAME_TO).sql(' ').visit(renameTo)
.qualify(qualify)
.end(ALTER_VIEW_RENAME);
}
ctx.formatIndentEnd();
}
@Override
public final Clause[] clauses(Context<?> ctx) {
return CLAUSES;
}
}