X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.layer0%2Fsrc%2Forg%2Fsimantics%2Fdb%2Flayer0%2Fvariable%2FRVIBuilder.java;fp=bundles%2Forg.simantics.db.layer0%2Fsrc%2Forg%2Fsimantics%2Fdb%2Flayer0%2Fvariable%2FRVIBuilder.java;h=96f1be4c15e3b18f295529e1ceaecd3182a366c3;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/RVIBuilder.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/RVIBuilder.java
new file mode 100644
index 000000000..96f1be4c1
--- /dev/null
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/variable/RVIBuilder.java
@@ -0,0 +1,112 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2011 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.layer0.variable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.simantics.databoard.binding.Binding;
+import org.simantics.db.Resource;
+import org.simantics.db.layer0.variable.RVI.RVIPart;
+import org.simantics.db.layer0.variable.Variables.Role;
+
+/**
+ * Utility for building RVI parts.
+ * 
+ * @author toni.kalajainen
+ */
+public class RVIBuilder {
+
+	Binding rviBinding;
+    List<RVIPart> parts;
+
+    public RVIBuilder(Binding rviBinding)
+    {
+        parts = new ArrayList<RVIPart>();
+    }
+
+    public RVIBuilder(RVI rvi)
+    {
+        set(rvi);
+    }
+
+    public RVIBuilder set( RVI rvi ) 
+    {
+    	this.rviBinding = rvi.getBinding();
+        parts = new ArrayList<RVIPart>( rvi.parts.length + 10 );
+        for ( RVIPart part : rvi.parts ) parts.add( part );
+        return this;
+    }
+
+    public RVIBuilder append( RVI rvi ) 
+    {
+        for ( RVIPart part : rvi.parts ) parts.add( part );
+        return this;
+    }
+
+    public RVIBuilder append( RVIPart part )
+    {
+        parts.add( part );
+        return this;
+    }
+
+    public RVIBuilder append( Role role, String string )
+    {
+        parts.add( new RVI.StringRVIPart(role, string) );
+        return this;
+    }
+
+    public RVIBuilder append( Role role, Resource resource )
+    {
+        parts.add( new RVI.ResourceRVIPart(role, resource) );
+        return this;
+    }
+    
+    public RVIBuilder append( Role role, Resource resource, long mostSignificant, long leastSignificant)
+    {
+        parts.add( new RVI.GuidRVIPart(role, resource, mostSignificant, leastSignificant) );
+        return this;
+    }
+
+    /**
+     * @param rvi the RVI to truncate
+     * @param n number of parts to remove from the end of the RVI
+     * @return truncated RVI
+     */
+    public RVIBuilder removeLast(int n) {
+        if (n > parts.size())
+            throw new IllegalArgumentException("Requested to remove " + n + " parts from RVI, only " + parts.size()
+                    + " parts exist in '" + parts + "'");
+        parts = parts.subList(0, parts.size() - n);
+        return this;
+    }
+
+    public RVIBuilder removeFromFirstRole(Role role) {
+        for (int i = 0; i < parts.size(); ++i) {
+            if (parts.get(i).getRole() == role) {
+                parts = parts.subList(0, i);
+                return this;
+            }
+        }
+        return this;
+    }
+
+    public RVI toRVI()
+    {
+        if (parts.isEmpty())
+            return RVI.empty( rviBinding );
+        RVI rvi = new RVI( rviBinding );
+        rvi.parts = (RVIPart[]) parts.toArray( new RVIPart[ parts.size() ] );
+        return rvi;
+    }
+
+}