src.jptools.parser.language.sql.statements.elements.AbstractSQLHelper Maven / Gradle / Ivy

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/*
 * AbstractSQLHelper.java
 * 
 * Copyright by jptools, all rights reserved.
 */
package jptools.parser.language.sql.statements.elements;


import jptools.parser.language.sql.SQLSymbolToken;
import jptools.parser.language.sql.statements.SQLSelectStatement;
import jptools.util.KeyValueHolder;

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


/**
 * Defines the super class of all helper classes
 * 
 * @author Meier Patrick
 * @version $Revision: 1.7 $
 */
public abstract class AbstractSQLHelper
{
    private List> expression;
    
    
    /**
     * Constructor for AbstractSQLHelper
     */
    public AbstractSQLHelper()
    {
        super();
        expression = new ArrayList>();
    }


    /**
     * Adds an expression
     * 
     * @param token the combination token
     * @param exp the expression
     */
    public void addExpression( SQLSymbolToken token, String exp )
    {
        expression.add( new KeyValueHolder( token, exp ) );
    }

    
    /**
     * Adds a select statement
     * 
     * @param token the combination token
     * @param statement the select statement
     */
    public void addSelectStatement( SQLSymbolToken token, SQLSelectStatement statement )
    {
        expression.add( new KeyValueHolder( token, statement ) );
    }

    
    /**
     * Gets the expression
     * 
     * @return a list with KeyValueHolders. The key contains the combination
     * token and the value the expression
     */
    public List> getExpressions()
    {
        return expression;
    }

    
    /**
     * Create a sub expression list
     * 
     * @param startTags the list contains String or SQLSymbolToken elements
     * @return a list with KeyValueHolders. The key contains the combination
     * token and the value the expression
     */
    public List> getSubExpressionList( List