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/**
 * Copyright (c) 2009-2011, Lukas Eder, [email protected]
 * All rights reserved.
 *
 * This software is licensed to you under the Apache License, Version 2.0
 * (the "License"); You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * . Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * . Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * . Neither the name "jOOQ" nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package org.jooq.util.ingres;

import static org.jooq.util.ingres.ingres.tables.IiconstraintIndexes.IICONSTRAINT_INDEXES;
import static org.jooq.util.ingres.ingres.tables.Iiconstraints.IICONSTRAINTS;
import static org.jooq.util.ingres.ingres.tables.IiindexColumns.IIINDEX_COLUMNS;
import static org.jooq.util.ingres.ingres.tables.Iiindexes.IIINDEXES;
import static org.jooq.util.ingres.ingres.tables.IirefConstraints.IIREF_CONSTRAINTS;
import static org.jooq.util.ingres.ingres.tables.Iisequences.IISEQUENCES;
import static org.jooq.util.ingres.ingres.tables.Iitables.IITABLES;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

import org.jooq.Record;
import org.jooq.Result;
import org.jooq.impl.Factory;
import org.jooq.util.AbstractDatabase;
import org.jooq.util.ArrayDefinition;
import org.jooq.util.ColumnDefinition;
import org.jooq.util.DefaultRelations;
import org.jooq.util.DefaultSequenceDefinition;
import org.jooq.util.EnumDefinition;
import org.jooq.util.PackageDefinition;
import org.jooq.util.RoutineDefinition;
import org.jooq.util.SequenceDefinition;
import org.jooq.util.TableDefinition;
import org.jooq.util.UDTDefinition;
import org.jooq.util.ingres.ingres.$ingresFactory;
import org.jooq.util.ingres.ingres.tables.IiconstraintIndexes;
import org.jooq.util.ingres.ingres.tables.Iiconstraints;
import org.jooq.util.ingres.ingres.tables.IiindexColumns;
import org.jooq.util.ingres.ingres.tables.Iiindexes;
import org.jooq.util.ingres.ingres.tables.IirefConstraints;
import org.jooq.util.ingres.ingres.tables.Iisequences;
import org.jooq.util.ingres.ingres.tables.Iitables;

/**
 * @author Lukas Eder
 */
public class IngresDatabase extends AbstractDatabase {

    @Override
    public Factory create() {
        return new $ingresFactory(getConnection());
    }

    @Override
    protected void loadPrimaryKeys(DefaultRelations relations) throws SQLException {
        for (Record record : fetchKeys("P")) {
            String key = record.getValue(Iiconstraints.CONSTRAINT_NAME.trim());
            String tableName = record.getValue(Iiconstraints.TABLE_NAME.trim());
            String columnName = record.getValue(IiindexColumns.COLUMN_NAME.trim());

            TableDefinition table = getTable(tableName);
            if (table != null) {
                relations.addPrimaryKey(key, table.getColumn(columnName));
            }
        }
    }

    @Override
    protected void loadUniqueKeys(DefaultRelations relations) throws SQLException {
        for (Record record : fetchKeys("U")) {
            String key = record.getValue(Iiconstraints.CONSTRAINT_NAME.trim());
            String tableName = record.getValue(Iiconstraints.TABLE_NAME.trim());
            String columnName = record.getValue(IiindexColumns.COLUMN_NAME.trim());

            TableDefinition table = getTable(tableName);
            if (table != null) {
                relations.addPrimaryKey(key, table.getColumn(columnName));
            }
        }
    }

    private List fetchKeys(String constraintType) throws SQLException {
        return create().select(
                Iiconstraints.TABLE_NAME.trim(),
                Iiconstraints.CONSTRAINT_NAME.trim(),
                IiindexColumns.COLUMN_NAME.trim())
            .from(IICONSTRAINTS)
            .join(IICONSTRAINT_INDEXES)
            .on(Iiconstraints.CONSTRAINT_NAME.equal(IiconstraintIndexes.CONSTRAINT_NAME))
            .and(Iiconstraints.SCHEMA_NAME.equal(IiconstraintIndexes.SCHEMA_NAME))
            .join(IIINDEXES)
            .on(IiconstraintIndexes.INDEX_NAME.equal(Iiindexes.INDEX_NAME))
            .and(IiconstraintIndexes.SCHEMA_NAME.equal(Iiindexes.INDEX_OWNER))
            .join(IIINDEX_COLUMNS)
            .on(Iiindexes.INDEX_NAME.equal(IiindexColumns.INDEX_NAME))
            .and(Iiindexes.INDEX_OWNER.equal(IiindexColumns.INDEX_OWNER))
            .where(Iiconstraints.SCHEMA_NAME.equal(getSchemaName()))
            .and(Iiconstraints.CONSTRAINT_TYPE.equal(constraintType))
            .orderBy(
                Iiconstraints.TABLE_NAME.asc(),
                IiindexColumns.INDEX_NAME.asc(),
                IiindexColumns.KEY_SEQUENCE.asc())
            .fetch();
    }

    @Override
    protected void loadForeignKeys(DefaultRelations relations) throws SQLException {
        Result result = create()
            .select(
                IirefConstraints.REF_CONSTRAINT_NAME.trim(),
                IirefConstraints.UNIQUE_CONSTRAINT_NAME.trim(),
                IirefConstraints.REF_TABLE_NAME.trim(),
                IiindexColumns.COLUMN_NAME.trim())
            .from(IICONSTRAINTS)
            .join(IIREF_CONSTRAINTS)
            .on(Iiconstraints.CONSTRAINT_NAME.equal(IirefConstraints.REF_CONSTRAINT_NAME))
            .and(Iiconstraints.SCHEMA_NAME.equal(IirefConstraints.REF_SCHEMA_NAME))
            .join(IICONSTRAINT_INDEXES)
            .on(Iiconstraints.CONSTRAINT_NAME.equal(IiconstraintIndexes.CONSTRAINT_NAME))
            .and(Iiconstraints.SCHEMA_NAME.equal(IiconstraintIndexes.SCHEMA_NAME))
            .join(IIINDEXES)
            .on(IiconstraintIndexes.INDEX_NAME.equal(Iiindexes.INDEX_NAME))
            .and(IiconstraintIndexes.SCHEMA_NAME.equal(Iiindexes.INDEX_OWNER))
            .join(IIINDEX_COLUMNS)
            .on(Iiindexes.INDEX_NAME.equal(IiindexColumns.INDEX_NAME))
            .and(Iiindexes.INDEX_OWNER.equal(IiindexColumns.INDEX_OWNER))
            .where(Iiconstraints.SCHEMA_NAME.equal(getSchemaName()))
            .and(Iiconstraints.CONSTRAINT_TYPE.equal("R"))
            .orderBy(
                IirefConstraints.REF_TABLE_NAME.asc(),
                IirefConstraints.REF_CONSTRAINT_NAME.asc(),
                IiindexColumns.KEY_SEQUENCE.asc())
            .fetch();

        for (Record record : result) {
            String foreignKey = record.getValue(IirefConstraints.REF_CONSTRAINT_NAME.trim());
            String foreignKeyTable = record.getValue(IirefConstraints.REF_TABLE_NAME.trim());
            String foreignKeyColumn = record.getValue(IiindexColumns.COLUMN_NAME.trim());
            String uniqueKey = record.getValue(IirefConstraints.UNIQUE_CONSTRAINT_NAME.trim());

            TableDefinition referencingTable = getTable(foreignKeyTable);

            if (referencingTable != null) {
                ColumnDefinition referencingColumn = referencingTable.getColumn(foreignKeyColumn);
                relations.addForeignKey(foreignKey, uniqueKey, referencingColumn);
            }
        }
    }

    @Override
    protected List getSequences0() throws SQLException {
        List result = new ArrayList();

        for (Record record : create().select(Iisequences.SEQ_NAME.trim())
                .from(IISEQUENCES)
                .where(Iisequences.SEQ_OWNER.equal(getSchemaName()))
                .orderBy(Iisequences.SEQ_NAME)
                .fetch()) {

            result.add(new DefaultSequenceDefinition(this, record.getValue(Iisequences.SEQ_NAME.trim())));
        }

        return result;
    }

    @Override
    protected List getTables0() throws SQLException {
        List result = new ArrayList();

        for (Record record : create().select(Iitables.TABLE_NAME.trim())
                .from(IITABLES)
                .where(Iitables.TABLE_OWNER.equal(getSchemaName()))
                .orderBy(Iitables.TABLE_NAME.trim())
                .fetch()) {

            result.add(new IngresTableDefinition(this, record.getValue(Iitables.TABLE_NAME.trim())));
        }

        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 getUDTs0() throws SQLException {
        List result = new ArrayList();
        return result;
    }

    @Override
    protected List getArrays0() throws SQLException {
        List result = new ArrayList();
        return result;
    }
}