package org.hibernate.sql.ordering.antlr;
public class OrderingSpecification extends NodeSupport {
public static class Ordering {
public static final Ordering ASCENDING = new Ordering( "asc" );
public static final Ordering DESCENDING = new Ordering( "desc" );
private final String name;
private Ordering(String name) {
this.name = name;
}
}
private boolean resolved;
private Ordering ordering;
public Ordering getOrdering() {
if ( !resolved ) {
ordering = resolve( getText() );
resolved = true;
}
return ordering;
}
private static Ordering resolve(String text) {
if ( Ordering.ASCENDING.name.equals( text ) ) {
return Ordering.ASCENDING;
}
else if ( Ordering.DESCENDING.name.equals( text ) ) {
return Ordering.DESCENDING;
}
else {
throw new IllegalStateException( "Unknown ordering [" + text + "]" );
}
}
public String getRenderableText() {
return getOrdering().name;
}
}