org.jooq.util.sqlite.SQLiteDatabase Maven / Gradle / Ivy
/*
* 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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* 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.impl.DSL.field;
import static org.jooq.impl.DSL.inline;
import static org.jooq.impl.DSL.one;
import static org.jooq.impl.DSL.table;
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 java.util.Map.Entry;
import org.jooq.DSLContext;
import org.jooq.Field;
import org.jooq.Record;
import org.jooq.Result;
import org.jooq.SQLDialect;
import org.jooq.SortOrder;
import org.jooq.impl.DSL;
import org.jooq.util.AbstractDatabase;
import org.jooq.util.AbstractIndexDefinition;
import org.jooq.util.ArrayDefinition;
import org.jooq.util.CatalogDefinition;
import org.jooq.util.ColumnDefinition;
import org.jooq.util.DefaultIndexColumnDefinition;
import org.jooq.util.DefaultRelations;
import org.jooq.util.DomainDefinition;
import org.jooq.util.EnumDefinition;
import org.jooq.util.IndexColumnDefinition;
import org.jooq.util.IndexDefinition;
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 schemata = new ArrayList();
schemata.add(schema);
setConfiguredSchemata(schemata);
}
@Override
protected DSLContext create0() {
return DSL.using(getConnection(), SQLDialect.SQLITE);
}
@Override
protected List getIndexes0() throws SQLException {
final List result = new ArrayList();
final Field fIndexName = field("il.name", String.class).as("index_name");
final Field fUnique = field("il.\"unique\"", boolean.class).as("unique");
final Field fSeqno = field("ii.seqno", int.class).add(one()).as("seqno");
final Field fColumnName = field("ii.name", String.class).as("column_name");
Map> indexes = create()
.select(
SQLiteMaster.NAME,
fIndexName,
fUnique,
fSeqno,
fColumnName)
.from(
SQLITE_MASTER,
table("pragma_index_list({0})", SQLiteMaster.NAME).as("il"),
table("pragma_index_info(il.name)").as("ii"))
.where(SQLiteMaster.TYPE.eq(inline("table")))
.orderBy(1, 2, 4)
.fetchGroups(
new Field[] {
SQLiteMaster.NAME,
fIndexName,
fUnique
},
new Field[] {
fColumnName,
fSeqno
});
indexLoop:
for (Entry> entry : indexes.entrySet()) {
final Record index = entry.getKey();
final Result columns = entry.getValue();
final SchemaDefinition tableSchema = getSchemata().get(0);
final String indexName = index.get(fIndexName);
final String tableName = index.get(SQLiteMaster.NAME);
final TableDefinition table = getTable(tableSchema, tableName);
final boolean unique = index.get(fUnique);
if (table != null) {
// [#6310] [#6620] Function-based indexes are not yet supported
for (Record column : columns)
if (table.getColumn(column.get(fColumnName)) == null)
continue indexLoop;
result.add(new AbstractIndexDefinition(tableSchema, indexName, table, unique) {
List indexColumns = new ArrayList();
{
for (Record column : columns) {
indexColumns.add(new DefaultIndexColumnDefinition(
this,
table.getColumn(column.get(fColumnName)),
SortOrder.ASC,
column.get(fSeqno, int.class)
));
}
}
@Override
protected List getIndexColumns0() {
return indexColumns;
}
});
}
}
return result;
}
@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 map = new HashMap();
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 getCatalogs0() throws SQLException {
List result = new ArrayList();
result.add(new CatalogDefinition(this, "", ""));
return result;
}
@Override
protected List getSchemata0() throws SQLException {
List result = new ArrayList();
result.add(new SchemaDefinition(this, "", ""));
return result;
}
@Override
protected List getSequences0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getTables0() throws SQLException {
List result = new ArrayList();
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 getRoutines0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getPackages0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getEnums0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getDomains0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getUDTs0() throws SQLException {
List result = new ArrayList();
return result;
}
@Override
protected List getArrays0() throws SQLException {
List result = new ArrayList();
return result;
}
}
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