Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / binding / StringBinding.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/StringBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/StringBinding.java
new file mode 100644 (file)
index 0000000..a15722a
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/StringBinding.java
@@ -0,0 +1,153 @@
+/*******************************************************************************\r
+ *  Copyright (c) 2010 Association for Decentralized Information Management in\r
+ *  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.databoard.binding;
+
+import java.util.IdentityHashMap;\r
+import java.util.Set;\r
+import java.util.regex.Pattern;\r
+\r
+import org.simantics.databoard.accessor.reference.ChildReference;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.binding.error.RuntimeBindingException;\r
+import org.simantics.databoard.binding.impl.BindingPrintContext;\r
+import org.simantics.databoard.type.StringType;\r
+import org.simantics.databoard.util.IdentityPair;\r
+import org.simantics.databoard.util.Range;\r
+
+/**
+ * This is a binding of String Type and a Java Object.
+ *
+ * @see StringType
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
+ */
+public abstract class StringBinding extends Binding {
+\r
+       public StringBinding(StringType type) {
+               this.type = type;
+       }
+       
+       public StringType type() {
+               return (StringType) type;
+       }
+       
+       public abstract Object create(String value) throws BindingException;
+       
+       public Object createUnchecked(String value) throws RuntimeBindingException {
+               try {
+                       return create(value);
+               } catch (BindingException e) {
+                       throw new RuntimeBindingException(e);
+               }
+       }\r
+       \r
+       @Override\r
+       public void readFrom(Binding srcBinding, Object src, Object dst)\r
+                       throws BindingException {\r
+               String v = ((StringBinding)srcBinding).getValue(src);\r
+               setValue(dst, v);\r
+       }
+       
+       public abstract String getValue(Object o) throws BindingException; 
+       public abstract void setValue(Object o, String newValue) throws BindingException; 
+       public abstract boolean isInstance(Object obj);
+       
+    @Override
+    public void accept(Visitor1 v, Object obj) {
+        v.visit(this, obj);        
+    }
+    
+    @Override
+    public <T> T accept(Visitor<T> v) {
+        return v.visit(this);
+    }
+
+    /**
+     * Assert obj is a valid StringType
+     * 
+     * This asserts that
+     *  1. pattern is valid
+     *  2. mime type is valid
+     *  3. length is valid
+     * 
+     * @throws BindingException
+     */
+    @Override
+    public void assertInstaceIsValid(Object obj, Set<Object> validInstances) throws BindingException {
+               if (!isInstance(obj)) throw new BindingException("Not a correct instance");                             
+               
+       StringType type = type();
+       Pattern p = type.getCompiledPattern();
+       String mimeType = type.getMimeType();
+       Range length = type.getLength();
+       if (p==null && length==null && mimeType==null) return;          
+       String str = getValue(obj);     
+       
+       // 1. Assert the pattern is valid
+       if (p!=null && !p.matcher(str).matches()) {
+               throw new BindingException("The value ("+str+") doesn't match the pattern ("+p.toString()+").");
+       }
+       
+       // 2. Assert the mime type is valid
+       if (mimeType!=null) {                   
+//             try {
+//                     MimeType mt = new MimeType(mimeType);
+//                     if (!mt.match(str)) 
+//                             throw new BindingException("The object is not "+mimeType);
+//             } catch (MimeTypeParseException mtpe) {
+//                     throw new BindingException(mtpe);
+//             }               
+       }
+       
+       // 3. Assert the length is valid
+       if (length!=null && !length.contains(str.length())) {
+               throw new BindingException("Length ("+str.length()+") doesn't fit into the range "+length);
+       }
+    }
+
+    @Override
+    public int deepCompare(Object o1, Object o2,
+               Set<IdentityPair<Object, Object>> compareHistory)
+               throws BindingException {
+       String v1 = getValue(o1);
+       String v2 = getValue(o2);
+       return v1.compareTo(v2);        
+    }
+    
+    @Override
+    public int deepHashValue(Object value, IdentityHashMap<Object, Object> hashedObjects) throws BindingException {
+       return getValue(value).hashCode();
+    }\r
+    \r
+    @Override\r
+       protected void toString(Object value, BindingPrintContext ctx) throws BindingException {\r
+       ctx.b.append('"');\r
+       ctx.b.append(getValue(value));\r
+       ctx.b.append('"');\r
+    }\r
+    \r
+       @Override\r
+       public Binding getComponentBinding(ChildReference path) {\r
+               if (path==null) return this;            \r
+               throw new IllegalArgumentException();\r
+       }           \r
+       \r
+       @Override\r
+       public int getComponentCount() {\r
+               return 0;\r
+       }\r
+       \r
+       @Override\r
+       public Binding getComponentBinding(int index) {\r
+               throw new IllegalArgumentException();\r
+       }
+    
+}