StringBuffer buf = new StringBuffer( cases.size() * 15 + 10 );
StringBuffer buf2 = new StringBuffer( cases.size() );
Iterator iter = cases.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry me = (Map.Entry) iter.next();
buf.append(" casewhen(")
.append( me.getKey() )
.append(" is not null")
.append(", ")
.append( me.getValue() )
.append(", ");
buf2.append(")");
}
buf.append("-1"); //null caused some problems
buf.append( buf2.toString() );
if ( returnColumnName!=null ) {
buf.append(" as ")
.append(returnColumnName);
}
return buf.toString();