/
H2TableDefinition.java
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/
H2TableDefinition.java
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/*
* 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
*
*
*
*
*
*
*
*
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*
*
*
*
*/
package org.jooq.util.h2;
import static org.jooq.impl.DSL.choose;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.name;
import static org.jooq.impl.DSL.zero;
import static org.jooq.tools.StringUtils.defaultString;
import static org.jooq.util.h2.information_schema.tables.Columns.COLUMNS;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.jooq.Param;
import org.jooq.Record;
import org.jooq.util.AbstractTableDefinition;
import org.jooq.util.ColumnDefinition;
import org.jooq.util.DataTypeDefinition;
import org.jooq.util.DefaultColumnDefinition;
import org.jooq.util.DefaultDataTypeDefinition;
import org.jooq.util.SchemaDefinition;
import org.jooq.util.h2.information_schema.tables.Columns;
/**
* H2 table definition
*
* @author Espen Stromsnes
* @author Oliver Flege
*/
public class H2TableDefinition extends AbstractTableDefinition {
public H2TableDefinition(SchemaDefinition schema, String name, String comment) {
super(schema, name, comment);
}
@Override
public List<ColumnDefinition> getElements0() throws SQLException {
List<ColumnDefinition> result = new ArrayList<ColumnDefinition>();
// [#7206] H2 defaults to these precision/scale values when a DECIMAL/NUMERIC type
// does not have any precision/scale. What works in H2 works in almost no
// other database, which is relevant when using the DDLDatabase for instance,
// which is based on the H2Database
Param<Integer> maxP = inline(65535);
Param<Integer> maxS = inline(32767);
for (Record record : create().select(
Columns.COLUMN_NAME,
Columns.ORDINAL_POSITION,
Columns.TYPE_NAME,
((H2Database) getDatabase()).is1_4_197() ? Columns.COLUMN_TYPE : inline("").as(Columns.COLUMN_TYPE),
choose().when(Columns.NUMERIC_PRECISION.eq(maxP).and(Columns.NUMERIC_SCALE.eq(maxS)), zero())
.otherwise(Columns.CHARACTER_MAXIMUM_LENGTH).as(Columns.CHARACTER_MAXIMUM_LENGTH),
Columns.NUMERIC_PRECISION.decode(maxP, zero(), Columns.NUMERIC_PRECISION).as(Columns.NUMERIC_PRECISION),
Columns.NUMERIC_SCALE.decode(maxS, zero(), Columns.NUMERIC_SCALE).as(Columns.NUMERIC_SCALE),
Columns.IS_NULLABLE,
Columns.COLUMN_DEFAULT,
Columns.REMARKS,
Columns.SEQUENCE_NAME)
.from(COLUMNS)
.where(Columns.TABLE_SCHEMA.equal(getSchema().getName()))
.and(Columns.TABLE_NAME.equal(getName()))
.orderBy(Columns.ORDINAL_POSITION)
.fetch()) {
// [#5331] AUTO_INCREMENT (MySQL style)
// [#5331] DEFAULT nextval('sequence') (PostgreSQL style)
// [#6332] [#6339] system-generated defaults shouldn't produce a default clause
boolean isIdentity =
null != record.get(Columns.SEQUENCE_NAME)
|| defaultString(record.get(Columns.COLUMN_DEFAULT)).trim().toLowerCase().startsWith("nextval");
DataTypeDefinition type = new DefaultDataTypeDefinition(
getDatabase(),
getSchema(),
record.get(Columns.TYPE_NAME),
record.get(Columns.CHARACTER_MAXIMUM_LENGTH),
record.get(Columns.NUMERIC_PRECISION),
record.get(Columns.NUMERIC_SCALE),
record.get(Columns.IS_NULLABLE, boolean.class),
isIdentity ? null : record.get(Columns.COLUMN_DEFAULT),
name(getSchema().getName(), getName() + "_" + record.get(Columns.COLUMN_NAME)));
ColumnDefinition column = new DefaultColumnDefinition(
getDatabase().getTable(getSchema(), getName()),
record.get(Columns.COLUMN_NAME),
record.get(Columns.ORDINAL_POSITION),
type,
isIdentity,
record.get(Columns.REMARKS));
result.add(column);
}
return result;
}
}