X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FResourceRead3.java;fp=bundles%2Forg.simantics.db.common%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fcommon%2Frequest%2FResourceRead3.java;h=f9aa5b771f0f23e709624a920c53f0294c07da04;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead3.java b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead3.java
new file mode 100644
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+++ b/bundles/org.simantics.db.common/src/org/simantics/db/common/request/ResourceRead3.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.common.request;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+
+abstract public class ResourceRead3<T> extends ResourceReadBase<T> {
+
+	final protected Resource resource;
+	final protected Resource resource2;
+	final protected Resource resource3;
+
+    @Override
+    public int hashCode() {
+        return resource.hashCode() + 51 * (resource2.hashCode() + 31 * resource3.hashCode());
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object)
+            return true;
+        else if (object == null)
+            return false;
+        else if (getClass() != object.getClass())
+            return false;
+        ResourceRead3<?> r = (ResourceRead3<?>) object;
+        return resource.equals(r.resource) && resource2.equals(r.resource2) && resource3.equals(r.resource3);
+    }
+
+    public ResourceRead3(Resource r1, Resource r2, Resource r3) {
+    	if(r1 == null) throw new IllegalArgumentException("Null resource1.");
+    	if(r2 == null) throw new IllegalArgumentException("Null resource2.");
+    	if(r3 == null) throw new IllegalArgumentException("Null resource3.");
+        this.resource = r1;
+        this.resource2 = r2;
+        this.resource3 = r3;
+    }
+
+    @Override
+    public boolean isImmutable(ReadGraph graph) throws DatabaseException {
+    	return graph.isImmutable(resource) && graph.isImmutable(resource2) && graph.isImmutable(resource3);
+    }
+    
+}