package eu.dnetlib.dlms.jdbc.ast;

import java.sql.SQLException;
import java.util.Collection;

import eu.dnetlib.dlms.jdbc.ExecutorContext;
import eu.dnetlib.dlms.jdbc.server.IExpressionExecutor;

/**
 * Representation in the AST of a collection of values. For example [el1, el2, el3] in
 * <code>new structSet({[el1, el2, el3]});</code>
 * 
 * @author alessia
 * 
 */
public class CollectionNode extends Lit {
	/** Expressions that are the values of the collection. */
	private Collection<Expression> values;

	/**
	 * 
	 * {@inheritDoc}
	 * 
	 * @see eu.dnetlib.dlms.jdbc.ast.Expression#evaluate(eu.dnetlib.dlms.jdbc.server.IExpressionExecutor,
	 *      eu.dnetlib.dlms.jdbc.ExecutorContext)
	 */
	@Override
	public Object evaluate(final IExpressionExecutor executor, final ExecutorContext context) throws SQLException {
		return executor.evaluate(this, context);
	}

	/**
	 * Constructor.
	 * 
	 * @param values
	 *            Collection of Expression
	 */
	public CollectionNode(final Collection<Expression> values) {
		super();
		this.values = values;
	}

	@Override
	public String toString() {
		return "CollectionNode [values=" + this.values + "]";
	}

	public Collection<Expression> getValues() {
		return this.values;
	}

	public void setValues(final Collection<Expression> values) {
		this.values = values;
	}
}