/*
 * Copyright 2004-2011 H2 Group.
 * Copyright 2011 James Moger.
 *
 * 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.
 */

package com.iciql;

/**
 * This class represents a query with a join.
 */

public class QueryJoin<T> {

	private Query<T> query;
	private SelectTable<T> join;

	QueryJoin(Query<T> query, SelectTable<T> join) {
		this.query = query;
		this.join = join;
	}

	public QueryJoinCondition<T, Boolean> on(boolean x) {
		query.getFrom().getAliasDefinition().checkMultipleBooleans();
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Byte> on(byte x) {
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Short> on(short x) {
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Integer> on(int x) {
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Long> on(long x) {
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Float> on(float x) {
		return addPrimitive(x);
	}

	public QueryJoinCondition<T, Double> on(double x) {
		return addPrimitive(x);
	}

	private <A> QueryJoinCondition<T, A> addPrimitive(A x) {
		A alias = query.getPrimitiveAliasByValue(x);
		if (alias == null) {
			// this will result in an unmapped field exception
			return new QueryJoinCondition<T, A>(query, join, x);
		}
		return new QueryJoinCondition<T, A>(query, join, alias);
	}

	public <A> QueryJoinCondition<T, A> on(A x) {
		return new QueryJoinCondition<T, A>(query, join, x);
	}
}