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SQL Processor - Data Driven Queries

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package org.sqlproc.engine.impl;

/**
 * The ancestor of META SQL sub-elements, which can be used in {@link org.sqlproc.engine.impl.SqlMetaLogExpr}.
 * 
 * In fact it's a marker interface for
 * 
 * {@link org.sqlproc.engine.impl.SqlMetaIdent}
 * 
{@link org.sqlproc.engine.impl.SqlMetaConst}
 * 
 * 
 * @author Vladimir Hudec
 */
interface SqlMetaLogOperand {

    /**
     * The main contract to evaluate a logical value of META SQL sub-elements.
     * 
     * @param ctx
     *            the context for a dynamic ANSI SQL Query generation
     * @return a logical value
     */
    boolean processExpression(SqlProcessContext ctx);
}