querytranslatortestcase.java

hibernate-distribution-3.3.1.GA-dist.zip源码

	protected Exception compileBadHql(String hql, boolean scalar) {
		QueryTranslator newQueryTranslator;
		Map replacements = null;
		Exception newException = null;
		SessionFactoryImplementor factory = getSessionFactoryImplementor();
		try {
			QueryTranslatorFactory ast = new ASTQueryTranslatorFactory();
			newQueryTranslator = ast.createQueryTranslator( hql, hql, Collections.EMPTY_MAP, factory );
			newQueryTranslator.compile( replacements, scalar );
		}
		catch ( QueryException e ) {
			newException = e;
		}
		catch ( MappingException e ) {
			newException = e;
		}
		assertNotNull( "Expected exception from compilation of '" + hql + "'!", newException );
		return newException;
	}

	private void checkSql(QueryTranslator oldQueryTranslator, QueryTranslator newQueryTranslator, String hql, boolean scalar, String sql) {

		String oldsql = oldQueryTranslator.getSQLString();
		String newsql = newQueryTranslator.getSQLString();
		System.out.println( "HQL    : " + ASTPrinter.escapeMultibyteChars(hql) );
		System.out.println( "OLD SQL: " + ASTPrinter.escapeMultibyteChars(oldsql) );
		System.out.println( "NEW SQL: " + ASTPrinter.escapeMultibyteChars(newsql) );
		if ( sql == null ) {
			// Check the generated SQL.                                          ASTPrinter.escapeMultibyteChars(
			assertSQLEquals( "SQL is not the same as the old SQL (scalar=" + scalar + ")", oldsql, newsql );
		}
		else {
			assertSQLEquals( "SQL is not the same as the expected SQL (scalar=" + scalar + ")", sql, newsql );
		}
	}

	private void assertSQLEquals(String message, String oldsql, String newsql) {
		Map oldMap = getTokens(oldsql);
		Map newMap = getTokens(newsql);
		if ( !oldMap.equals(newMap) ) {
			assertEquals(message, oldsql, newsql);			
		}
		
		//String oldsqlStripped = stripExtraSpaces( oldsql );
		//String newsqlStripped = stripExtraSpaces( newsql );
		//assertEquals( message, oldsqlStripped, newsqlStripped );
	}

	
	private Map getTokens(String sql) {
		Map result = new TreeMap();
		if (sql==null) return result;
		result.put( "=", new Integer( StringHelper.countUnquoted(sql, '=') ) );
		StringTokenizer tokenizer = new StringTokenizer( sql, "(),= " );
		while ( tokenizer.hasMoreTokens() ) {
			String fragment = tokenizer.nextToken();
			/*if ( "on".equals(fragment) ) fragment = "and";
			if ( "join".equals(fragment) || "inner".equals(fragment) ) continue;*/
			Integer count = (Integer) result.get(fragment);
			if ( count==null ) {
				count = new Integer(1);
			}
			else {
				count = new Integer( count.intValue() + 1 );
			}
			result.put(fragment, count);
		}
		return result;
	}
	
	private String stripExtraSpaces(String string) {
		if ( string == null ) {
			return null;
		}

		StringBuffer buffer = new StringBuffer( string.length() );
		char[] chars = string.toCharArray();
		int length = chars.length;
		boolean wasSpace = false;
		for ( int i = 0; i < length; i++ ) {
			boolean isSpace = chars[i] == ' ';
			if ( wasSpace && isSpace ) {
				continue;
			}
			else {
				buffer.append( chars[i] );
			}

			wasSpace = isSpace;
		}
//		StringTokenizer tokenizer = new StringTokenizer( string.trim(), " " );
//		while ( tokenizer.hasMoreTokens() ) {
//			final String fragment = tokenizer.nextToken();
//			buffer.append( fragment );
//			buffer.append( " " );
//		}
//
		return buffer.toString();
	}

	private void checkSqlByResultSet(
	        QueryTranslator oldQueryTranslator,
	        QueryTranslator newQueryTranslator,
	        Object[] binds
	) {
		String oldsql = oldQueryTranslator.getSQLString();
		String newsql = newQueryTranslator.getSQLString();

		Session session = openSession();
		Connection connection = session.connection();

		PreparedStatement oldps = null;
		PreparedStatement newps = null;
		ResultSet oldrs = null;
		ResultSet newrs = null;

		try {
			try {
				oldps = connection.prepareStatement( oldsql );
			}
			catch( Throwable t ) {
				fail( "Unable to prepare sql generated by old parser : " + t );
			}
			try {
				newps = connection.prepareStatement( newsql );
			}
			catch( Throwable t ) {
				fail( "Unable to prepare sql generated by new parser : " + t );
			}

			checkBinds(oldps, newps, binds);

			try {
				oldrs = executeQuery( oldps, binds );
			}
			catch( Throwable t ) {
				fail( "Unable to execute sql generated by old parser : " + t );
			}

			try {
				newrs = executeQuery( newps, binds );
			}
			catch( Throwable t ) {
				fail( "Unable to execute sql generated by new parser : " + t );
			}

			checkResults( oldrs, newrs );
		}
		finally {
			// make *sure* the sql resources get cleaned up
			release(oldrs);
			release(newrs);
			release(oldps);
			release(newps);
			release(session);
		}
	}

	private void checkBinds(PreparedStatement oldps, PreparedStatement newps, Object[] binds) {
		// Make sure the binds "feel" ok
		try {
			ParameterMetaData oldBindMetaData = oldps.getParameterMetaData();
			ParameterMetaData newBindMetaData = newps.getParameterMetaData();

			assertEquals( "Different bind parameter count", oldBindMetaData.getParameterCount(), newBindMetaData.getParameterCount() );
			assertEquals( "Incorrect number of binds passed in", oldBindMetaData.getParameterCount(), binds == null ? 0 : binds.length );

			for ( int i = 0, max = oldBindMetaData.getParameterCount(); i < max; i++ ) {
				assertEquals( "Different bind types", oldBindMetaData.getParameterType(i), newBindMetaData.getParameterType(i) );
			}
		}
		catch( Throwable t ) {
			fail( "SQLException comparing binds : " + t );
		}
	}

	private ResultSet executeQuery(PreparedStatement ps, Object[] binds) throws SQLException {
		if ( binds != null ) {
			for ( int i = 0, max = binds.length; i < max; i++ ) {
				ps.setObject( i, binds[i] );
			}
		}

		return ps.executeQuery();
	}

	private void checkResults(ResultSet oldrs, ResultSet newrs) {
		ResultSetMetaData oldmeta = null;
		ResultSetMetaData newmeta = null;
		int colCount = 0;
		Type[] types = null;

		// first compare the metadata from the two results
		try {
			oldmeta = oldrs.getMetaData();
			newmeta = newrs.getMetaData();
			assertEquals( "Different column counts", oldmeta.getColumnCount(), newmeta.getColumnCount() );

			colCount = oldmeta.getColumnCount();
			types = new Type[colCount];

			for ( int i = 1, max = colCount; i < max; i++ ) {
				assertEquals( "Column names were different", oldmeta.getColumnName(i), newmeta.getColumnName(i) );
				assertEquals( "Column types were different", oldmeta.getColumnType(i), newmeta.getColumnType(i) );
				assertEquals( "Java types were different", oldmeta.getColumnClassName(i), newmeta.getColumnClassName(i) );
				types[i] = TypeFactory.basic( oldmeta.getColumnClassName(i) );
			}
		}
		catch( Throwable t ) {
			fail( "Error comparing result set metadata" );
		}

		// Then compare the actual results
		try {
			while ( oldrs.next() & newrs.next() ) {
				for ( int i = 1; i < colCount; i++ ) {
					Object oldval = oldrs.getObject(i);
					if ( oldrs.wasNull() ) oldval = null;
					Object newval = newrs.getObject(i);
					if ( newrs.wasNull() ) newval = null;
					checkLogicalEquality( oldval, newval, types[i] );
				}
			}

			// for "better reporting" purposes, make sure both result sets are fully exhausted
			while ( oldrs.next() );
			while ( newrs.next() );

			assertEquals( "Different row counts", oldrs.getRow(), newrs.getRow() );
		}
		catch( Throwable t ) {
			fail( "Error comparing result set structure" );
		}
	}

	private void checkLogicalEquality(Object oldval, Object newval, Type type) {
		if ( oldval == null && newval == null ) {
			// two nulls are logically equivalent here...
			return;
		}
		else {
			assertTrue( "Different result values", type.isEqual(oldval, newval, EntityMode.POJO) );
		}
	}

	private void release(PreparedStatement ps) {
		if ( ps != null ) {
			try {
				ps.close();
			}
			catch( Throwable t ) {}
		}
	}

	private void release(ResultSet rs) {
		if ( rs != null ) {
			try {
				rs.close();
			}
			catch( Throwable t ) {}
		}
	}

	private void release(Session session) {
		if ( session != null ) {
			try {
				session.close();
			}
			catch( Throwable t ) {}
		}
	}
}