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/*
 * Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
 * All rights reserved.
 *
 * 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.impl;

import static org.jooq.impl.DSL.inline;

import java.util.Arrays;
import java.util.Collection;

import org.jooq.AggregateFilterStep;
import org.jooq.AggregateFunction;
import org.jooq.Condition;
import org.jooq.Configuration;
import org.jooq.Field;
import org.jooq.GroupConcatOrderByStep;
import org.jooq.GroupConcatSeparatorStep;
import org.jooq.Name;
import org.jooq.QueryPart;
import org.jooq.SQL;
import org.jooq.SortField;
import org.jooq.WindowDefinition;
import org.jooq.WindowFinalStep;
import org.jooq.WindowPartitionByStep;
import org.jooq.WindowSpecification;

/**
 * @author Lukas Eder
 */
final class GroupConcat extends AbstractFunction implements GroupConcatOrderByStep {

    /**
     * Generated UID
     */
    private static final long   serialVersionUID = -6884415527559632960L;

    private final Field      field;
    private final boolean       distinct;
    private final SortFieldList orderBy;
    private String              separator;

    GroupConcat(Field field) {
        this(field, false);
    }

    GroupConcat(Field field, boolean distinct) {
        super("group_concat", SQLDataType.VARCHAR);

        this.field = field;
        this.distinct = distinct;
        this.orderBy = new SortFieldList();
    }

    @Override
    final Field getFunction0(Configuration configuration) {
        Function result;

        if (separator == null) {
            result = new Function(Term.LIST_AGG, distinct, SQLDataType.VARCHAR, field);
        }
        else {
            Field literal = inline(separator);
            result = new Function(Term.LIST_AGG, distinct, SQLDataType.VARCHAR, field, literal);
        }

        return result.withinGroupOrderBy(orderBy);
    }


































    @Override
    public final AggregateFilterStep filterWhere(Condition... conditions) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(Collection conditions) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(Field c) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(Boolean c) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(SQL sql) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(String sql) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(String sql, Object... bindings) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFilterStep filterWhere(String sql, QueryPart... parts) {
        throw new UnsupportedOperationException("FILTER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final WindowPartitionByStep over() {
        throw new UnsupportedOperationException("OVER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final WindowFinalStep over(WindowSpecification specification) {
        throw new UnsupportedOperationException("OVER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final WindowFinalStep over(WindowDefinition definition) {
        throw new UnsupportedOperationException("OVER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final WindowFinalStep over(Name name) {
        throw new UnsupportedOperationException("OVER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final WindowFinalStep over(String name) {
        throw new UnsupportedOperationException("OVER() not supported on GROUP_CONCAT aggregate function");
    }

    @Override
    public final AggregateFunction separator(String s) {
        this.separator = s;
        return this;
    }

    @Override
    public final GroupConcatSeparatorStep orderBy(Field... fields) {
        orderBy.addAll(fields);
        return this;
    }

    @Override
    public final GroupConcatSeparatorStep orderBy(SortField... fields) {
        orderBy.addAll(Arrays.asList(fields));
        return this;
    }

    @Override
    public final GroupConcatSeparatorStep orderBy(Collection> fields) {
        orderBy.addAll(fields);
        return this;
    }
}