Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.common / src / org / simantics / db / common / StandardStatement.java

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/StandardStatement.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/StandardStatement.java
new file mode 100644 (file)
index 0000000..6886faa
--- /dev/null
+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/StandardStatement.java
@@ -0,0 +1,77 @@
+/*******************************************************************************\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.common;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Statement;\r
+\r
+public final class StandardStatement implements Statement, Comparable<Statement> {\r
+       \r
+    final private Resource s;\r
+    final private Resource p;\r
+    final private Resource o;\r
+    \r
+    public StandardStatement(final Resource s, final Resource p, final Resource o) {\r
+        this.s = s;\r
+        this.p = p;\r
+        this.o = o;\r
+    }\r
+    \r
+    @Override\r
+    public Resource getObject() {\r
+        return o;\r
+    }\r
+\r
+    @Override\r
+    final public Resource getPredicate() {\r
+        return p;\r
+    }\r
+\r
+    @Override\r
+    final public Resource getSubject() {\r
+        return s;\r
+    }\r
+\r
+    @Override\r
+    public boolean isAsserted(Resource testSubject) {\r
+       return !s.equals(testSubject);\r
+    }\r
+    \r
+    @Override\r
+    final public int hashCode() {\r
+        return 41 * ( 31 * s.hashCode() + p.hashCode()) + o.hashCode();\r
+    }\r
+\r
+    @Override\r
+    public boolean equals(Object object) {\r
+        if (this == object)\r
+            return true;\r
+        else if (object == null)\r
+            return false;\r
+        else if (!(object instanceof Statement))\r
+            return false;\r
+        Statement r = (Statement)object;\r
+        return s.equalsResource(r.getSubject()) && p.equalsResource(r.getPredicate()) && o.equalsResource(r.getObject());\r
+    }\r
+    \r
+    @Override\r
+    public int compareTo(Statement other) {\r
+        Statement impl = (Statement)other; \r
+        int result = s.compareTo(impl.getSubject());\r
+        if(result != 0) return result;\r
+        result = p.compareTo(impl.getPredicate());\r
+        if(result != 0) return result;\r
+        return o.compareTo(impl.getObject());\r
+    }\r
+\r
+}\r
+\r