/*
* 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.sqlite;
import static org.jooq.util.sqlite.sqlite_master.SQLiteMaster.SQLITE_MASTER;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jooq.DSLContext;
import org.jooq.Record;
import org.jooq.SQLDialect;
import org.jooq.impl.DSL;
import org.jooq.util.AbstractDatabase;
import org.jooq.util.ArrayDefinition;
import org.jooq.util.CatalogDefinition;
import org.jooq.util.ColumnDefinition;
import org.jooq.util.DefaultRelations;
import org.jooq.util.DomainDefinition;
import org.jooq.util.EnumDefinition;
import org.jooq.util.PackageDefinition;
import org.jooq.util.RoutineDefinition;
import org.jooq.util.SchemaDefinition;
import org.jooq.util.SequenceDefinition;
import org.jooq.util.TableDefinition;
import org.jooq.util.UDTDefinition;
import org.jooq.util.jaxb.Schema;
import org.jooq.util.sqlite.sqlite_master.SQLiteMaster;
/**
* SQLite implementation of {@link AbstractDatabase}
*
* @author Lukas Eder
*/
public class SQLiteDatabase extends AbstractDatabase {
public SQLiteDatabase() {
// SQLite doesn't know schemata
Schema schema = new Schema();
schema.setInputSchema("");
schema.setOutputSchema("");
List<Schema> schemata = new ArrayList<Schema>();
schemata.add(schema);
setConfiguredSchemata(schemata);
}
@Override
protected DSLContext create0() {
return DSL.using(getConnection(), SQLDialect.SQLITE);
}
@Override
protected void loadPrimaryKeys(DefaultRelations relations) throws SQLException {
for (String tableName : create()
.select(SQLiteMaster.NAME)
.from(SQLITE_MASTER)
.where(SQLiteMaster.TYPE.in("table"))
.orderBy(SQLiteMaster.NAME)
.fetch(SQLiteMaster.NAME)) {
for (Record record : create().fetch("pragma table_info('" + tableName + "')")) {
if (record.get("pk", int.class) > 0) {
String columnName = record.get("name", String.class);
// Generate a primary key name
String key = "pk_" + tableName;
TableDefinition table = getTable(getSchemata().get(0), tableName);
if (table != null) {
ColumnDefinition column = table.getColumn(columnName);
relations.addPrimaryKey(key, column);
}
}
}
}
}
@Override
protected void loadUniqueKeys(DefaultRelations r) throws SQLException {
}
@Override
protected void loadForeignKeys(DefaultRelations relations) throws SQLException {
for (TableDefinition table : getTables(getSchemata().get(0))) {
Map<String, Integer> map = new HashMap<String, Integer>();
for (Record record : create().fetch("pragma foreign_key_list(" + table.getName() + ")")) {
String foreignKeyPrefix =
"fk_" + table.getName() +
"_" + record.get("table");
Integer sequence = map.get(foreignKeyPrefix);
if (sequence == null) {
sequence = 0;
}
if (0 == record.get("seq", Integer.class)) {
sequence = sequence + 1;
}
map.put(foreignKeyPrefix, sequence);
String foreignKey =
"fk_" + table.getName() +
"_" + record.get("table") +
"_" + sequence;
String foreignKeyTable = table.getName();
String foreignKeyColumn = record.get("from", String.class);
// SQLite mixes up cases from the actual declaration and the
// reference definition! It's possible that a table is declared
// in lower case, and the foreign key in upper case. Hence,
// correct the foreign key
TableDefinition referencingTable = getTable(getSchemata().get(0), foreignKeyTable);
TableDefinition referencedTable = getTable(getSchemata().get(0), record.get("table", String.class), true);
if (referencedTable != null) {
String uniqueKey =
"pk_" + referencedTable.getName();
if (referencingTable != null) {
ColumnDefinition referencingColumn = referencingTable.getColumn(foreignKeyColumn);
relations.addForeignKey(foreignKey, uniqueKey, referencingColumn, getSchemata().get(0));
}
}
}
}
}
@Override
protected void loadCheckConstraints(DefaultRelations r) throws SQLException {
// Currently not supported
}
@Override
protected List<CatalogDefinition> getCatalogs0() throws SQLException {
List<CatalogDefinition> result = new ArrayList<CatalogDefinition>();
result.add(new CatalogDefinition(this, "", ""));
return result;
}
@Override
protected List<SchemaDefinition> getSchemata0() throws SQLException {
List<SchemaDefinition> result = new ArrayList<SchemaDefinition>();
result.add(new SchemaDefinition(this, "", ""));
return result;
}
@Override
protected List<SequenceDefinition> getSequences0() throws SQLException {
List<SequenceDefinition> result = new ArrayList<SequenceDefinition>();
return result;
}
@Override
protected List<TableDefinition> getTables0() throws SQLException {
List<TableDefinition> result = new ArrayList<TableDefinition>();
for (String name : create().select(SQLiteMaster.NAME)
.from(SQLITE_MASTER)
.where(SQLiteMaster.TYPE.in("table", "view"))
.orderBy(SQLiteMaster.NAME)
.fetch(SQLiteMaster.NAME)) {
SQLiteTableDefinition table = new SQLiteTableDefinition(getSchemata().get(0), name, "");
result.add(table);
}
return result;
}
@Override
protected List<RoutineDefinition> getRoutines0() throws SQLException {
List<RoutineDefinition> result = new ArrayList<RoutineDefinition>();
return result;
}
@Override
protected List<PackageDefinition> getPackages0() throws SQLException {
List<PackageDefinition> result = new ArrayList<PackageDefinition>();
return result;
}
@Override
protected List<EnumDefinition> getEnums0() throws SQLException {
List<EnumDefinition> result = new ArrayList<EnumDefinition>();
return result;
}
@Override
protected List<DomainDefinition> getDomains0() throws SQLException {
List<DomainDefinition> result = new ArrayList<DomainDefinition>();
return result;
}
@Override
protected List<UDTDefinition> getUDTs0() throws SQLException {
List<UDTDefinition> result = new ArrayList<UDTDefinition>();
return result;
}
@Override
protected List<ArrayDefinition> getArrays0() throws SQLException {
List<ArrayDefinition> result = new ArrayList<ArrayDefinition>();
return result;
}
}