X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2FStringBinding.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2FStringBinding.java;h=a15722aab7805c6232124e69f9e57de71f18e1bb;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..a15722aab
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/StringBinding.java
@@ -0,0 +1,153 @@
+/*******************************************************************************
+ *  Copyright (c) 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.databoard.binding;
+
+import java.util.IdentityHashMap;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+import org.simantics.databoard.accessor.reference.ChildReference;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.binding.error.RuntimeBindingException;
+import org.simantics.databoard.binding.impl.BindingPrintContext;
+import org.simantics.databoard.type.StringType;
+import org.simantics.databoard.util.IdentityPair;
+import org.simantics.databoard.util.Range;
+
+/**
+ * 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 {
+
+	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);
+		}
+	}
+	
+	@Override
+	public void readFrom(Binding srcBinding, Object src, Object dst)
+			throws BindingException {
+		String v = ((StringBinding)srcBinding).getValue(src);
+		setValue(dst, v);
+	}
+	
+	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();
+    }
+    
+    @Override
+	protected void toString(Object value, BindingPrintContext ctx) throws BindingException {
+    	ctx.b.append('"');
+    	ctx.b.append(getValue(value));
+    	ctx.b.append('"');
+    }
+    
+	@Override
+	public Binding getComponentBinding(ChildReference path) {
+		if (path==null) return this;		
+		throw new IllegalArgumentException();
+	}	    
+	
+	@Override
+	public int getComponentCount() {
+		return 0;
+	}
+	
+	@Override
+	public Binding getComponentBinding(int index) {
+		throw new IllegalArgumentException();
+	}
+    
+}