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org.hibernate.sql.ordering.antlr.GeneratedOrderByFragmentRenderer Maven / Gradle / Ivy
// $ANTLR : "order-by-render.g" -> "GeneratedOrderByFragmentRenderer.java"$
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.sql.ordering.antlr;
import antlr.TreeParser;
import antlr.Token;
import antlr.collections.AST;
import antlr.RecognitionException;
import antlr.ANTLRException;
import antlr.NoViableAltException;
import antlr.MismatchedTokenException;
import antlr.SemanticException;
import antlr.collections.impl.BitSet;
import antlr.ASTPair;
import antlr.collections.impl.ASTArray;
/**
* Antlr grammar for rendering ORDER_BY trees as described by the {@link OrderByFragmentParser}
* @author Steve Ebersole
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public class GeneratedOrderByFragmentRenderer extends antlr.TreeParser implements GeneratedOrderByFragmentRendererTokenTypes
{
// the buffer to which we write the resulting SQL.
private StringBuilder buffer = new StringBuilder();
protected void out(String text) {
buffer.append( text );
}
protected void out(AST ast) {
buffer.append( ast.getText() );
}
/*package*/ String getRenderedFragment() {
return buffer.toString();
}
/**
* Implementation note: This is just a stub. OrderByFragmentRenderer contains the effective implementation.
*/
protected String renderOrderByElement(String expression, String collation, String order, String nulls) {
throw new UnsupportedOperationException("Concrete ORDER BY renderer should override this method.");
}
public GeneratedOrderByFragmentRenderer() {
tokenNames = _tokenNames;
}
public final void orderByFragment(AST _t) throws RecognitionException {
AST orderByFragment_AST_in = (_t == ASTNULL) ? null : (AST)_t;
try { // for error handling
AST __t738 = _t;
AST tmp1_AST_in = (AST)_t;
match(_t,ORDER_BY);
_t = _t.getFirstChild();
sortSpecification(_t);
_t = _retTree;
{
_loop740:
do {
if (_t==null) _t=ASTNULL;
if ((_t.getType()==SORT_SPEC)) {
out(", ");
sortSpecification(_t);
_t = _retTree;
}
else {
break _loop740;
}
} while (true);
}
_t = __t738;
_t = _t.getNextSibling();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
}
public final void sortSpecification(AST _t) throws RecognitionException {
AST sortSpecification_AST_in = (_t == ASTNULL) ? null : (AST)_t;
String sortKeySpec = null; String collSpec = null; String ordSpec = null; String nullOrd = null;
try { // for error handling
AST __t742 = _t;
AST tmp2_AST_in = (AST)_t;
match(_t,SORT_SPEC);
_t = _t.getFirstChild();
sortKeySpec=sortKeySpecification(_t);
_t = _retTree;
{
if (_t==null) _t=ASTNULL;
switch ( _t.getType()) {
case COLLATE:
{
collSpec=collationSpecification(_t);
_t = _retTree;
break;
}
case 3:
case ORDER_SPEC:
case NULL_ORDER:
{
break;
}
default:
{
throw new NoViableAltException(_t);
}
}
}
{
if (_t==null) _t=ASTNULL;
switch ( _t.getType()) {
case ORDER_SPEC:
{
ordSpec=orderingSpecification(_t);
_t = _retTree;
break;
}
case 3:
case NULL_ORDER:
{
break;
}
default:
{
throw new NoViableAltException(_t);
}
}
}
{
if (_t==null) _t=ASTNULL;
switch ( _t.getType()) {
case NULL_ORDER:
{
nullOrd=nullOrdering(_t);
_t = _retTree;
break;
}
case 3:
{
break;
}
default:
{
throw new NoViableAltException(_t);
}
}
}
out( renderOrderByElement( sortKeySpec, collSpec, ordSpec, nullOrd ) );
_t = __t742;
_t = _t.getNextSibling();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
}
public final String sortKeySpecification(AST _t) throws RecognitionException {
String sortKeyExp = null;
AST sortKeySpecification_AST_in = (_t == ASTNULL) ? null : (AST)_t;
AST s = null;
try { // for error handling
AST __t747 = _t;
AST tmp3_AST_in = (AST)_t;
match(_t,SORT_KEY);
_t = _t.getFirstChild();
s = _t==ASTNULL ? null : (AST)_t;
sortKey(_t);
_t = _retTree;
_t = __t747;
_t = _t.getNextSibling();
sortKeyExp = s.getText();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
return sortKeyExp;
}
public final String collationSpecification(AST _t) throws RecognitionException {
String collSpecExp = null;
AST collationSpecification_AST_in = (_t == ASTNULL) ? null : (AST)_t;
AST c = null;
try { // for error handling
c = (AST)_t;
match(_t,COLLATE);
_t = _t.getNextSibling();
collSpecExp = "collate " + c.getText();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
return collSpecExp;
}
public final String orderingSpecification(AST _t) throws RecognitionException {
String ordSpecExp = null;
AST orderingSpecification_AST_in = (_t == ASTNULL) ? null : (AST)_t;
AST o = null;
try { // for error handling
o = (AST)_t;
match(_t,ORDER_SPEC);
_t = _t.getNextSibling();
ordSpecExp = o.getText();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
return ordSpecExp;
}
public final String nullOrdering(AST _t) throws RecognitionException {
String nullOrdExp = null;
AST nullOrdering_AST_in = (_t == ASTNULL) ? null : (AST)_t;
AST n = null;
try { // for error handling
n = (AST)_t;
match(_t,NULL_ORDER);
_t = _t.getNextSibling();
nullOrdExp = n.getText();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
return nullOrdExp;
}
public final void sortKey(AST _t) throws RecognitionException {
AST sortKey_AST_in = (_t == ASTNULL) ? null : (AST)_t;
try { // for error handling
AST tmp4_AST_in = (AST)_t;
match(_t,IDENT);
_t = _t.getNextSibling();
}
catch (RecognitionException ex) {
reportError(ex);
if (_t!=null) {_t = _t.getNextSibling();}
}
_retTree = _t;
}
public static final String[] _tokenNames = {
"<0>",
"EOF",
"<2>",
"NULL_TREE_LOOKAHEAD",
"ORDER_BY",
"SORT_SPEC",
"ORDER_SPEC",
"NULL_ORDER",
"SORT_KEY",
"EXPR_LIST",
"DOT",
"IDENT_LIST",
"COLUMN_REF",
"\"collate\"",
"\"asc\"",
"\"desc\"",
"\"nulls\"",
"FIRST",
"LAST",
"COMMA",
"HARD_QUOTE",
"IDENT",
"OPEN_PAREN",
"CLOSE_PAREN",
"NUM_DOUBLE",
"NUM_FLOAT",
"NUM_INT",
"NUM_LONG",
"QUOTED_STRING",
"\"ascending\"",
"\"descending\"",
"ID_START_LETTER",
"ID_LETTER",
"ESCqs",
"HEX_DIGIT",
"EXPONENT",
"FLOAT_SUFFIX",
"WS"
};
}
