/*
* 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
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
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* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq.impl;
import static org.jooq.impl.DSL.*;
import static org.jooq.impl.Keywords.*;
import static org.jooq.impl.Names.*;
import static org.jooq.impl.SQLDataType.*;
import static org.jooq.impl.Tools.BooleanDataKey.*;
import static org.jooq.SQLDialect.*;
import org.jooq.*;
import org.jooq.impl.*;
import java.util.*;
The CREATE SCHEMA IF NOT EXISTS
statement.
/**
* The <code>CREATE SCHEMA IF NOT EXISTS</code> statement.
*/
@SuppressWarnings({ "unused" })
final class CreateSchemaImpl
extends
AbstractRowCountQuery
implements
CreateSchemaFinalStep
{
private static final long serialVersionUID = 1L;
private final Schema schema;
private final boolean createSchemaIfNotExists;
CreateSchemaImpl(
Configuration configuration,
Schema schema,
boolean createSchemaIfNotExists
) {
super(configuration);
this.schema = schema;
this.createSchemaIfNotExists = createSchemaIfNotExists;
}
final Schema $schema() { return schema; }
final boolean $createSchemaIfNotExists() { return createSchemaIfNotExists; }
// -------------------------------------------------------------------------
// XXX: QueryPart API
// -------------------------------------------------------------------------
private static final Clause[] CLAUSES = { Clause.CREATE_SCHEMA };
private static final Set<SQLDialect> NO_SUPPORT_IF_NOT_EXISTS = SQLDialect.supportedBy(DERBY, FIREBIRD);
private final boolean supportsIfNotExists(Context<?> ctx) {
return !NO_SUPPORT_IF_NOT_EXISTS.contains(ctx.dialect());
}
@Override
public final void accept(Context<?> ctx) {
accept0(ctx);
}
private final void accept0(Context<?> ctx) {
if (createSchemaIfNotExists && !supportsIfNotExists(ctx)) {
Tools.beginTryCatch(ctx, DDLStatementType.CREATE_SCHEMA);
accept1(ctx);
Tools.endTryCatch(ctx, DDLStatementType.CREATE_SCHEMA);
}
else {
accept1(ctx);
}
}
private final void accept1(Context<?> ctx) {
accept2(ctx);
}
private final void accept2(Context<?> ctx) {
ctx.start(Clause.CREATE_SCHEMA_NAME)
.visit(K_CREATE);
ctx.sql(' ').visit(K_SCHEMA);
if (createSchemaIfNotExists && supportsIfNotExists(ctx))
ctx.sql(' ').visit(K_IF_NOT_EXISTS);
ctx.sql(' ').visit(schema)
.end(Clause.CREATE_SCHEMA_NAME);
}
@Override
public final Clause[] clauses(Context<?> ctx) {
return CLAUSES;
}
}