/*
 * Copyright Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags and
 * the COPYRIGHT.txt file distributed with this work.
 *
 * 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 org.teiid.query.sql.lang;

import java.util.ArrayList;
import java.util.List;

import org.teiid.core.util.EquivalenceUtil;
import org.teiid.query.sql.LanguageVisitor;
import org.teiid.query.sql.symbol.Expression;

/**
 * Represents the ArrayTable table function.
 */
public class ArrayTable extends TableFunctionReference {
	
    private Expression arrayValue;
    private List<ProjectedColumn> columns = new ArrayList<ProjectedColumn>();
    
    public List<ProjectedColumn> getColumns() {
		return columns;
	}
    
    public void setColumns(List<ProjectedColumn> columns) {
		this.columns = columns;
	}
    
    public Expression getArrayValue() {
		return arrayValue;
	}
    
    public void setArrayValue(Expression arrayValue) {
		this.arrayValue = arrayValue;
	}

	@Override
	public void acceptVisitor(LanguageVisitor visitor) {
		visitor.visit(this);
	}

	@Override
	protected ArrayTable cloneDirect() {
		ArrayTable clone = new ArrayTable();
		this.copy(clone);
		clone.setArrayValue((Expression)this.arrayValue.clone());
		for (ProjectedColumn column : columns) {
			clone.getColumns().add(column.copyTo(new ProjectedColumn()));
		}
		return clone;
	}

	@Override
	public boolean equals(Object obj) {
		if (obj == this) {
			return true;
		}
		if (!super.equals(obj) || !(obj instanceof ArrayTable)) {
			return false;
		}
		ArrayTable other = (ArrayTable)obj;
		return this.columns.equals(other.columns) 
			&& EquivalenceUtil.areEqual(arrayValue, other.arrayValue);
	}
	
}
