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/*
 * 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
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package org.jooq.meta.firebird;

import static org.jooq.meta.firebird.FirebirdDatabase.CHARACTER_LENGTH;
import static org.jooq.meta.firebird.FirebirdDatabase.FIELD_SCALE;
import static org.jooq.meta.firebird.FirebirdDatabase.FIELD_TYPE;
import static org.jooq.meta.firebird.rdb.Tables.RDB$FIELDS;
import static org.jooq.meta.firebird.rdb.Tables.RDB$PROCEDURE_PARAMETERS;

import java.sql.SQLException;

import org.jooq.Record;
import org.jooq.impl.DSL;
import org.jooq.meta.AbstractRoutineDefinition;
import org.jooq.meta.DataTypeDefinition;
import org.jooq.meta.DefaultDataTypeDefinition;
import org.jooq.meta.DefaultParameterDefinition;
import org.jooq.meta.InOutDefinition;
import org.jooq.meta.ParameterDefinition;
import org.jooq.meta.SchemaDefinition;
import org.jooq.meta.firebird.rdb.tables.Rdb$fields;
import org.jooq.meta.firebird.rdb.tables.Rdb$procedureParameters;

/**
 * @author Lukas Eder
 */
public class FirebirdRoutineDefinition extends AbstractRoutineDefinition {

    public FirebirdRoutineDefinition(SchemaDefinition schema, String name) {
        super(schema, null, name, null, null, false);
    }

    @Override
    protected void init0() throws SQLException {
        Rdb$procedureParameters p = RDB$PROCEDURE_PARAMETERS.as("p");
        Rdb$fields f = RDB$FIELDS.as("f");
        int i = 0;

        for (Record record : create()
                .select(
                    p.RDB$PARAMETER_NUMBER,
                    p.RDB$PARAMETER_TYPE,
                    p.RDB$PARAMETER_NAME.trim().as(p.RDB$PARAMETER_NAME),
                    FIELD_TYPE(f).as("FIELD_TYPE"),
                    CHARACTER_LENGTH(f).as("CHARACTER_LENGTH"),
                    f.RDB$FIELD_PRECISION,
                    FIELD_SCALE(f).as("FIELD_SCALE"),
                    DSL.bitOr(p.RDB$NULL_FLAG.nvl((short) 0), f.RDB$NULL_FLAG.nvl((short) 0)).as(p.RDB$NULL_FLAG),
                    p.RDB$DEFAULT_SOURCE)
                .from(p)
                .leftOuterJoin(f).on(p.RDB$FIELD_SOURCE.eq(f.RDB$FIELD_NAME))
                .where(p.RDB$PROCEDURE_NAME.eq(getName()))
                .orderBy(
                    p.RDB$PARAMETER_TYPE.desc(),
                    p.RDB$PARAMETER_NUMBER.asc())) {

            DataTypeDefinition type = new DefaultDataTypeDefinition(
                getDatabase(),
                getSchema(),
                record.get("FIELD_TYPE", String.class),
                record.get("CHARACTER_LENGTH", short.class),
                record.get(f.RDB$FIELD_PRECISION),
                record.get("FIELD_SCALE", Integer.class),
                record.get(p.RDB$NULL_FLAG) == 0,
                record.get(p.RDB$DEFAULT_SOURCE)
            );

            ParameterDefinition parameter = new DefaultParameterDefinition(
                this,
                record.get(p.RDB$PARAMETER_NAME),
                i++,
                type
            );

            addParameter(record.get(p.RDB$PARAMETER_TYPE, int.class).equals(0) ? InOutDefinition.IN : InOutDefinition.OUT, parameter);
        }

    }
}