/*
* 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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* 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.select;
import static org.jooq.util.h2.information_schema.tables.Columns.COLUMNS;
import static org.jooq.util.h2.information_schema.tables.Constraints.CONSTRAINTS;
import static org.jooq.util.h2.information_schema.tables.CrossReferences.CROSS_REFERENCES;
import static org.jooq.util.h2.information_schema.tables.FunctionAliases.FUNCTION_ALIASES;
import static org.jooq.util.h2.information_schema.tables.Indexes.INDEXES;
import static org.jooq.util.h2.information_schema.tables.Schemata.SCHEMATA;
import static org.jooq.util.h2.information_schema.tables.Sequences.SEQUENCES;
import static org.jooq.util.h2.information_schema.tables.Tables.TABLES;
import static org.jooq.util.h2.information_schema.tables.TypeInfo.TYPE_INFO;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.jooq.DSLContext;
import org.jooq.Record;
import org.jooq.Record4;
import org.jooq.Result;
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.DefaultCheckConstraintDefinition;
import org.jooq.util.DefaultDataTypeDefinition;
import org.jooq.util.DefaultRelations;
import org.jooq.util.DefaultSequenceDefinition;
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.h2.information_schema.tables.Columns;
import org.jooq.util.h2.information_schema.tables.Constraints;
import org.jooq.util.h2.information_schema.tables.CrossReferences;
import org.jooq.util.h2.information_schema.tables.FunctionAliases;
import org.jooq.util.h2.information_schema.tables.Indexes;
import org.jooq.util.h2.information_schema.tables.Schemata;
import org.jooq.util.h2.information_schema.tables.Sequences;
import org.jooq.util.h2.information_schema.tables.Tables;
import org.jooq.util.h2.information_schema.tables.TypeInfo;
/**
* H2 implementation of {@link AbstractDatabase}
*
* @author Espen Stromsnes
*/
public class H2Database extends AbstractDatabase {
@Override
protected DSLContext create0() {
return DSL.using(getConnection(), SQLDialect.H2);
}
@Override
protected void loadPrimaryKeys(DefaultRelations relations) throws SQLException {
for (Record record : fetchKeys("PRIMARY KEY")) {
SchemaDefinition schema = getSchema(record.get(Constraints.TABLE_SCHEMA));
if (schema != null) {
String tableName = record.get(Constraints.TABLE_NAME);
String primaryKey = record.get(Constraints.CONSTRAINT_NAME);
String columnName = record.get(Indexes.COLUMN_NAME);
TableDefinition table = getTable(schema, tableName);
if (table != null) {
relations.addPrimaryKey(primaryKey, table.getColumn(columnName));
}
}
}
}
@Override
protected void loadUniqueKeys(DefaultRelations relations) throws SQLException {
for (Record record : fetchKeys("UNIQUE")) {
SchemaDefinition schema = getSchema(record.get(Constraints.TABLE_SCHEMA));
if (schema != null) {
String tableName = record.get(Constraints.TABLE_NAME);
String primaryKey = record.get(Constraints.CONSTRAINT_NAME);
String columnName = record.get(Indexes.COLUMN_NAME);
TableDefinition table = getTable(schema, tableName);
if (table != null) {
relations.addUniqueKey(primaryKey, table.getColumn(columnName));
}
}
}
}
private Result<Record4<String, String, String, String>> fetchKeys(String constraintType) {
return create().select(
Constraints.TABLE_SCHEMA,
Constraints.TABLE_NAME,
Constraints.CONSTRAINT_NAME,
Indexes.COLUMN_NAME)
.from(CONSTRAINTS)
.join(INDEXES)
.on(Constraints.TABLE_SCHEMA.eq(Indexes.TABLE_SCHEMA))
.and(Constraints.TABLE_NAME.eq(Indexes.TABLE_NAME))
.and(Constraints.UNIQUE_INDEX_NAME.eq(Indexes.INDEX_NAME))
.where(Constraints.TABLE_SCHEMA.in(getInputSchemata()))
.and(Constraints.CONSTRAINT_TYPE.equal(constraintType))
.orderBy(
Constraints.TABLE_SCHEMA,
Constraints.CONSTRAINT_NAME,
Indexes.ORDINAL_POSITION)
.fetch();
}
@Override
protected void loadForeignKeys(DefaultRelations relations) throws SQLException {
for (Record record : create().select(
CrossReferences.FK_NAME,
CrossReferences.FKTABLE_NAME,
CrossReferences.FKTABLE_SCHEMA,
CrossReferences.FKCOLUMN_NAME,
Constraints.CONSTRAINT_NAME,
Constraints.CONSTRAINT_SCHEMA)
.from(CROSS_REFERENCES)
.join(CONSTRAINTS)
.on(CrossReferences.PK_NAME.equal(Constraints.UNIQUE_INDEX_NAME))
.and(CrossReferences.PKTABLE_NAME.equal(Constraints.TABLE_NAME))
.and(CrossReferences.PKTABLE_SCHEMA.equal(Constraints.TABLE_SCHEMA))
.where(CrossReferences.FKTABLE_SCHEMA.in(getInputSchemata()))
.and(Constraints.CONSTRAINT_TYPE.in("PRIMARY KEY", "UNIQUE"))
.orderBy(
CrossReferences.FKTABLE_SCHEMA.asc(),
CrossReferences.FK_NAME.asc(),
CrossReferences.ORDINAL_POSITION.asc())
.fetch()) {
SchemaDefinition foreignKeySchema = getSchema(record.get(CrossReferences.FKTABLE_SCHEMA));
SchemaDefinition uniqueKeySchema = getSchema(record.get(Constraints.CONSTRAINT_SCHEMA));
if (foreignKeySchema != null && uniqueKeySchema != null) {
String foreignKeyTableName = record.get(CrossReferences.FKTABLE_NAME);
String foreignKeyColumn = record.get(CrossReferences.FKCOLUMN_NAME);
String foreignKey = record.get(CrossReferences.FK_NAME);
String uniqueKey = record.get(Constraints.CONSTRAINT_NAME);
TableDefinition foreignKeyTable = getTable(foreignKeySchema, foreignKeyTableName);
if (foreignKeyTable != null) {
ColumnDefinition referencingColumn = foreignKeyTable.getColumn(foreignKeyColumn);
relations.addForeignKey(foreignKey, uniqueKey, referencingColumn, uniqueKeySchema);
}
}
}
}
@Override
protected void loadCheckConstraints(DefaultRelations relations) throws SQLException {
// TODO: Should we really UNION INFORMATION_SCHEMA.COLUMNS.CHECK_CONSTRAINT?
for (Record record : create()
.select(
Constraints.TABLE_SCHEMA,
Constraints.TABLE_NAME,
Constraints.CONSTRAINT_NAME,
Constraints.CHECK_EXPRESSION
)
.from(CONSTRAINTS)
.where(Constraints.CONSTRAINT_TYPE.eq("CHECK"))
.and(Constraints.TABLE_SCHEMA.in(getInputSchemata()))
.union(
select(
Columns.TABLE_SCHEMA,
Columns.TABLE_NAME,
Columns.CHECK_CONSTRAINT,
Columns.CHECK_CONSTRAINT
)
.from(COLUMNS)
.where(Columns.CHECK_CONSTRAINT.nvl("").ne(""))
.and(Columns.TABLE_SCHEMA.in(getInputSchemata())))
.fetch()) {
SchemaDefinition schema = getSchema(record.get(Constraints.TABLE_SCHEMA));
if (schema != null) {
TableDefinition table = getTable(schema, record.get(Constraints.TABLE_NAME));
if (table != null) {
relations.addCheckConstraint(table, new DefaultCheckConstraintDefinition(
schema,
table,
record.get(Constraints.CONSTRAINT_NAME),
record.get(Constraints.CHECK_EXPRESSION)
));
}
}
}
}
@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>();
for (Record record : create().select(
Schemata.SCHEMA_NAME,
Schemata.REMARKS)
.from(SCHEMATA)
.fetch()) {
result.add(new SchemaDefinition(this,
record.get(Schemata.SCHEMA_NAME),
record.get(Schemata.REMARKS)));
}
return result;
}
@Override
protected List<SequenceDefinition> getSequences0() throws SQLException {
List<SequenceDefinition> result = new ArrayList<SequenceDefinition>();
for (Record record : create().select(
Sequences.SEQUENCE_SCHEMA,
Sequences.SEQUENCE_NAME)
.from(SEQUENCES)
.where(Sequences.SEQUENCE_SCHEMA.in(getInputSchemata()))
.orderBy(
Sequences.SEQUENCE_SCHEMA,
Sequences.SEQUENCE_NAME)
.fetch()) {
SchemaDefinition schema = getSchema(record.get(Sequences.SEQUENCE_SCHEMA));
if (schema != null) {
String name = record.get(Sequences.SEQUENCE_NAME);
DefaultDataTypeDefinition type = new DefaultDataTypeDefinition(
this,
schema,
H2DataType.BIGINT.getTypeName()
);
result.add(new DefaultSequenceDefinition(schema, name, type));
}
}
return result;
}
@Override
protected List<TableDefinition> getTables0() throws SQLException {
List<TableDefinition> result = new ArrayList<TableDefinition>();
for (Record record : create().select(
Tables.TABLE_SCHEMA,
Tables.TABLE_NAME,
Tables.REMARKS)
.from(TABLES)
.where(Tables.TABLE_SCHEMA.in(getInputSchemata()))
.orderBy(
Tables.TABLE_SCHEMA,
Tables.TABLE_NAME)
.fetch()) {
SchemaDefinition schema = getSchema(record.get(Tables.TABLE_SCHEMA));
if (schema != null) {
String name = record.get(Tables.TABLE_NAME);
String comment = record.get(Tables.REMARKS);
H2TableDefinition table = new H2TableDefinition(schema, name, comment);
result.add(table);
}
}
return result;
}
@Override
protected List<RoutineDefinition> getRoutines0() throws SQLException {
List<RoutineDefinition> result = new ArrayList<RoutineDefinition>();
for (Record record : create()
.select(
FunctionAliases.ALIAS_SCHEMA,
FunctionAliases.ALIAS_NAME,
FunctionAliases.REMARKS,
FunctionAliases.DATA_TYPE,
FunctionAliases.RETURNS_RESULT,
TypeInfo.TYPE_NAME,
TypeInfo.PRECISION,
TypeInfo.MAXIMUM_SCALE)
.from(FUNCTION_ALIASES)
.leftOuterJoin(TYPE_INFO)
.on(FunctionAliases.DATA_TYPE.equal(TypeInfo.DATA_TYPE))
// [#1256] TODO implement this correctly. Not sure if POS = 0
// is the right predicate to rule out duplicate entries in TYPE_INFO
.and(TypeInfo.POS.equal(0))
.where(FunctionAliases.ALIAS_SCHEMA.in(getInputSchemata()))
.and(FunctionAliases.RETURNS_RESULT.in((short) 1, (short) 2))
.orderBy(FunctionAliases.ALIAS_NAME).fetch()) {
SchemaDefinition schema = getSchema(record.get(FunctionAliases.ALIAS_SCHEMA));
if (schema != null) {
String name = record.get(FunctionAliases.ALIAS_NAME);
String comment = record.get(FunctionAliases.REMARKS);
String typeName = record.get(TypeInfo.TYPE_NAME);
Integer precision = record.get(TypeInfo.PRECISION);
Short scale = record.get(TypeInfo.MAXIMUM_SCALE);
result.add(new H2RoutineDefinition(schema, name, comment, typeName, precision, scale));
}
}
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;
}
}