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/**
 * Copyright (c) 2009-2013, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * This work is dual-licensed
 * - under the Apache Software License 2.0 (the "ASL")
 * - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
 * =============================================================================
 * You may choose which license applies to you:
 *
 * - If you're using this work with Open Source databases, you may choose
 *   either ASL or jOOQ License.
 * - If you're using this work with at least one commercial database, you must
 *   choose jOOQ License
 *
 * For more information, please visit http://www.jooq.org/licenses
 *
 * Apache Software License 2.0:
 * -----------------------------------------------------------------------------
 * 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.
 *
 * jOOQ License and Maintenance Agreement:
 * -----------------------------------------------------------------------------
 * Data Geekery grants the Customer the non-exclusive, timely limited and
 * non-transferable license to install and use the Software under the terms of
 * the jOOQ License and Maintenance Agreement.
 *
 * This library is distributed with a LIMITED WARRANTY. See the jOOQ License
 * and Maintenance Agreement for more details: http://www.jooq.org/licensing
 */
package org.jooq.util.postgres;


import static org.jooq.util.postgres.information_schema.Tables.PARAMETERS;
import static org.jooq.util.postgres.information_schema.Tables.ROUTINES;

import java.sql.SQLException;
import java.util.Arrays;

import org.jooq.Record;
import org.jooq.util.AbstractRoutineDefinition;
import org.jooq.util.DataTypeDefinition;
import org.jooq.util.Database;
import org.jooq.util.DefaultDataTypeDefinition;
import org.jooq.util.DefaultParameterDefinition;
import org.jooq.util.InOutDefinition;
import org.jooq.util.ParameterDefinition;

/**
 * Postgres implementation of {@link AbstractRoutineDefinition}
 *
 * @author Lukas Eder
 */
public class PostgresRoutineDefinition extends AbstractRoutineDefinition {

    private final String specificName;

    public PostgresRoutineDefinition(Database database, Record record) {
        super(database.getSchema(record.getValue(ROUTINES.ROUTINE_SCHEMA)),
            null,
            record.getValue(ROUTINES.ROUTINE_NAME),
            null,
            record.getValue("overload", String.class));

        if (!Arrays.asList("void", "record").contains(record.getValue("data_type"))) {
            DataTypeDefinition type = new DefaultDataTypeDefinition(
                getDatabase(),
                database.getSchema(record.getValue(ROUTINES.ROUTINE_SCHEMA)),
                record.getValue("data_type", String.class),
                record.getValue(ROUTINES.CHARACTER_MAXIMUM_LENGTH),
                record.getValue(ROUTINES.NUMERIC_PRECISION),
                record.getValue(ROUTINES.NUMERIC_SCALE),
                null,
                null,
                record.getValue(ROUTINES.TYPE_UDT_NAME)
            );

            returnValue = new DefaultParameterDefinition(this, "RETURN_VALUE", -1, type);
        }

        specificName = record.getValue(ROUTINES.SPECIFIC_NAME);
    }

    @Override
    protected void init0() throws SQLException {
        for (Record record : create().select(
                PARAMETERS.PARAMETER_NAME,
                PARAMETERS.DATA_TYPE,
                PARAMETERS.CHARACTER_MAXIMUM_LENGTH,
                PARAMETERS.NUMERIC_PRECISION,
                PARAMETERS.NUMERIC_SCALE,
                PARAMETERS.UDT_NAME,
                PARAMETERS.ORDINAL_POSITION,
                PARAMETERS.PARAMETER_MODE)
            .from(PARAMETERS)
            .where(PARAMETERS.SPECIFIC_SCHEMA.equal(getSchema().getName()))
            .and(PARAMETERS.SPECIFIC_NAME.equal(specificName))
            .orderBy(PARAMETERS.ORDINAL_POSITION.asc())
            .fetch()) {

            String inOut = record.getValue(PARAMETERS.PARAMETER_MODE);

            DataTypeDefinition type = new DefaultDataTypeDefinition(
                getDatabase(),
                getSchema(),
                record.getValue(PARAMETERS.DATA_TYPE),
                record.getValue(PARAMETERS.CHARACTER_MAXIMUM_LENGTH),
                record.getValue(PARAMETERS.NUMERIC_PRECISION),
                record.getValue(PARAMETERS.NUMERIC_SCALE),
                null,
                null,
                record.getValue(PARAMETERS.UDT_NAME)
            );

            ParameterDefinition parameter = new DefaultParameterDefinition(
                this,
                record.getValue(PARAMETERS.PARAMETER_NAME),
                record.getValue(PARAMETERS.ORDINAL_POSITION),
                type
            );

            addParameter(InOutDefinition.getFromString(inOut), parameter);
        }
    }
}




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