fixed configureExtendedTypes in SybaseAdapter

Author: KravchenkoAS

cayenne-server/src/main/java/org/apache/cayenne/dba/oracle/OracleAdapter.java

@@ -175,7 +175,7 @@ public OracleAdapter(@Inject RuntimeProperties runtimeProperties,
 	 */
 	@Override
 	public SQLTreeProcessor getSqlTreeProcessor() {
-		return OracleSQLTreeProcessor.getInstance();
+		return new OracleSQLTreeProcessor();
 	}
 
 	/**

cayenne-server/src/main/java/org/apache/cayenne/dba/oracle/OracleSQLTreeProcessor.java

@@ -42,14 +42,6 @@ public class OracleSQLTreeProcessor extends BaseSQLTreeProcessor {
 
     private Node root;
 
-    private static final OracleSQLTreeProcessor INSTANCE = new OracleSQLTreeProcessor();
-
-    public static OracleSQLTreeProcessor getInstance() {
-        return INSTANCE;
-    }
-
-    protected OracleSQLTreeProcessor() { }
-
     @Override
     protected void onResultNode(Node parent, Node child, int index) {
         for(int i=0; i<child.getChildrenCount(); i++) {

cayenne-server/src/main/java/org/apache/cayenne/dba/sqlserver/SQLServerAdapter.java

@@ -109,7 +109,7 @@ public boolean supportsGeneratedKeysForBatchInserts() {
 	 */
 	@Override
 	public SQLTreeProcessor getSqlTreeProcessor() {
-		return SQLServerTreeProcessor.getInstance();
+		return new SQLServerTreeProcessor();
 	}
 
 	/**

cayenne-server/src/main/java/org/apache/cayenne/dba/sybase/SybaseAdapter.java

@@ -93,7 +93,7 @@ protected void configureExtendedTypes(ExtendedTypeMap map) {
         super.configureExtendedTypes(map);
 
         // create specially configured CharType handler
-        CharType charType = new CharType(false, false);
+        CharType charType = new CharType(true, false);
         map.registerType(charType);
 
         // create specially configured ByteArrayType handler

cayenne-server/src/main/java/org/apache/cayenne/dba/sybase/SybaseSQLTreeProcessor.java

@@ -34,14 +34,6 @@
  */
 public class SybaseSQLTreeProcessor extends BaseSQLTreeProcessor {
 
-    private static final SybaseSQLTreeProcessor INSTANCE = new SybaseSQLTreeProcessor();
-
-    public static SybaseSQLTreeProcessor getInstance() {
-        return INSTANCE;
-    }
-
-    protected SybaseSQLTreeProcessor() { }
-
     @Override
     protected void onLimitOffsetNode(Node parent, LimitOffsetNode child, int index) {
         // SQLServer uses "SELECT DISTINCT TOP N" or "SELECT TOP N" instead of LIMIT