Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.layer0 / src / org / simantics / db / layer0 / genericrelation / UnsupportedRelation.java

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/UnsupportedRelation.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/UnsupportedRelation.java
new file mode 100644 (file)
index 0000000..b265669
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/UnsupportedRelation.java
@@ -0,0 +1,93 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.db.layer0.genericrelation;\r
+\r
+import java.util.List;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.GenericRelation;\r
+import org.simantics.utils.datastructures.Pair;\r
+\r
+/**\r
+ * Default implementation for some methods of IRelation interface.\r
+ */\r
+public class UnsupportedRelation implements GenericRelation {\r
+\r
+       @Override\r
+       public boolean contains(ReadGraph graph, Object[] tuple) throws DatabaseException {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       @Override\r
+       public boolean isRealizable() {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       @Override\r
+       public List<Object[]> realize(ReadGraph graph) throws DatabaseException {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       @Override\r
+       public GenericRelation select(String bindingPattern, Object[] constants) {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       @Override\r
+       public GenericRelation selectByRelation(String bindingPattern,\r
+                       GenericRelation constraint) {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       @Override\r
+       public Pair<String, String>[] getFields() {\r
+               throw new UnsupportedOperationException();\r
+       }\r
+\r
+       private Class<?> getClass(String clazz) {\r
+               if("Long".equals(clazz)) return Long.class;\r
+               else return String.class;\r
+       }\r
+       \r
+       protected void checkSelectionArguments(String bindingPattern, Object[] constants, String[] allowedPatterns) {\r
+\r
+        boolean allowed = false;\r
+        for(String allow : allowedPatterns) {\r
+               if(allow.equals(bindingPattern)) {\r
+               allowed = true;\r
+               break;\r
+            }\r
+        }\r
+        \r
+        if(!allowed) throw new IllegalArgumentException("Select does not support binding pattern '" + bindingPattern + "'");\r
+\r
+               Pair<String, String>[] fields = getFields();\r
+\r
+               assert(bindingPattern.length() == fields.length);\r
+               int constantIndex = 0;\r
+               for(int i=0;i<bindingPattern.length();++i) {\r
+                       Class<?> clazz = getClass(fields[i].second);\r
+                       switch(bindingPattern.charAt(i)) {\r
+                       case 'b':\r
+                               if(!clazz.isInstance(constants[constantIndex++])) throw new IllegalArgumentException("Invalid constant.");\r
+                               break;\r
+                       case 'f':\r
+                               break;\r
+                       default:\r
+                               throw new IllegalArgumentException("Invalid binding character '" + bindingPattern.charAt(i) + "'");\r
+                       }\r
+               }\r
+\r
+       }\r
+\r
+}\r