X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FByteArrayBinding.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FByteArrayBinding.java;h=8e729caa1fac50b86cba294f3ed2e057f306873d;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ByteArrayBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ByteArrayBinding.java
new file mode 100644
index 000000000..8e729caa1
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/ByteArrayBinding.java
@@ -0,0 +1,225 @@
+/*******************************************************************************
+ *  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.impl;
+
+import java.lang.reflect.Array;
+import java.util.IdentityHashMap;
+import java.util.Iterator;
+import java.util.Set;
+
+import org.simantics.databoard.binding.ArrayBinding;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.binding.ByteBinding;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.binding.error.UnsupportedOperationException;
+import org.simantics.databoard.type.ArrayType;
+import org.simantics.databoard.type.ByteType;
+import org.simantics.databoard.type.NumberType;
+import org.simantics.databoard.util.IdentityPair;
+
+/**
+ * Binds Byte[] type to byte[] class.
+ */
+public final class ByteArrayBinding extends ArrayBinding {
+	
+	public static ByteArrayBinding createFrom(ArrayType type) {
+		return new ByteArrayBinding(type, new ByteBindingDefault((ByteType) type.componentType));
+	}
+
+	public ByteArrayBinding(ArrayType type, Binding componentBinding) {
+		super(type, componentBinding);
+	}
+	
+	@Override
+	public Object create() {
+		return new byte[0];
+	}
+	
+	@Override
+	public Object create(int length, Iterator<Object> values) {
+		byte[] array = new byte[length];
+		for(int i=0;i<length;++i)
+			array[i] = (Byte)values.next();
+		return array;
+	}
+
+	public Object create(Object[] values) {
+		byte[] result = new byte[values.length];
+		for (int i=0; i<values.length; i++)
+			result[i] = (Byte) values[i];
+		return result;
+	}	
+	
+	/**
+	 * Create an array object.
+	 * Note! The argument is consumed (is used in the result).
+	 * 
+	 * @param array
+	 * @return an object that contains the array
+	 */
+	public Object create(byte[] array) {
+		return array;
+	}
+
+	public Object create(Byte[] array) {
+		int len = array.length;
+		byte[] result = new byte[len];
+		for (int i=0; i<len; i++)
+			result[i] = array[i];
+		return result;
+	}
+	
+	@Override
+    public Object createDefault()
+    throws BindingException
+    {
+		NumberType nt = (NumberType) type().componentType;
+		if (nt.getRange() == null) {
+	    	return new byte[ type().minLength() ];
+		}
+		return super.createDefault();
+    }	
+	
+
+	@Override
+	public void readFrom(Binding srcBinding, Object src, Object dst)
+			throws BindingException {
+		// Src Binding
+		ArrayBinding sb = (ArrayBinding) srcBinding;
+		// Src Component Binding
+		ByteBinding scb = (ByteBinding) sb.getComponentBinding();
+		
+		byte[] d = (byte[]) dst;
+		if (d.length != sb.size(src)) throw new BindingException("byte[] is length immutable");
+		
+		for (int i=0; i<d.length; i++) {
+			d[i] = scb.getValue_( sb.get(src, i) );
+		}
+	}	
+	
+	@Override
+	public Object readFromTry(Binding srcBinding, Object src, Object dst)
+			throws BindingException {
+		// Src Binding
+		ArrayBinding sb = (ArrayBinding) srcBinding;
+		// Src Component Binding
+		ByteBinding scb = (ByteBinding) sb.getComponentBinding();
+		
+		byte[] d = (byte[]) dst;
+		int srcSize = sb.size(src);
+		if (d.length != srcSize) d = new byte[ srcSize ];
+		
+		for (int i=0; i<d.length; i++) {
+			d[i] = scb.getValue_( sb.get(src, i) );
+		}
+		return d; 
+	}		
+	
+	@Override
+	public Object get(Object array, int index) throws BindingException 
+	{
+		if (!isInstance(array)) throw new BindingException("Unexpected class "+array.getClass().getSimpleName()+", byte[] expected");
+		return ((byte[])array)[index];
+	}
+	
+	@Override
+	public void getAll(Object array, Object[] result) throws BindingException {
+		byte[] a = (byte[])array;
+		for (int i=0; i<a.length; i++)
+			result[i] = a[i];
+	}
+
+	@Override
+	public void set(Object array, int index, Object value)
+			throws BindingException {
+		byte[] a = (byte[])array;
+		a[index] = (Byte) value;
+	}
+
+	@Override
+	public int size(Object array) 
+	throws BindingException 
+	{
+		if (!isInstance(array)) throw new BindingException("Unexpected class "+array.getClass().getSimpleName()+", byte[] expected");
+		return ((byte[])array).length;
+	}
+
+	@Override
+	public boolean isInstance(Object obj) {
+		return obj instanceof byte[];
+	}
+	
+	@Override
+	public boolean isImmutable() {
+		return false;
+	}	
+	
+	public byte[] getArray(Object array)
+	throws BindingException
+	{
+		if (!isInstance(array)) throw new BindingException("Unexpected class "+array.getClass().getSimpleName()+", byte[] expected");
+		return (byte[]) array;
+	}
+
+    @Override
+    public int deepHashValue(Object value, IdentityHashMap<Object, Object> hashedObjects) throws BindingException {
+    	int result = 1;
+    	byte[] array = (byte[]) value;
+    	for (int i=0; i<array.length; i++) {
+    		result = 31*result + (int)array[i];
+    	}
+    	return result;
+    }
+    
+    @Override
+    public int deepCompare(Object o1, Object o2,
+    		Set<IdentityPair<Object, Object>> compareHistory)
+    		throws BindingException {
+    	byte[] b1 = (byte[]) o1;
+    	byte[] b2 = (byte[]) o2;
+		// Compare Lengths
+		int l1 = b1.length;
+		int l2 = b2.length;
+		int dif = l1 - l2;
+		if (dif!=0) return dif;
+		// Compare elements
+		for (int i=0; i<l1; i++) {
+			dif = b1[i] - b2[i];
+			if (dif!=0) return dif;
+		}
+		return 0;
+    }    
+
+    @Override
+    public void add(Object array, int index, Object element)
+    		throws BindingException, IndexOutOfBoundsException {
+    	throw new UnsupportedOperationException();
+    }
+    
+	@Override
+	public void remove(Object array, int index, int count) throws BindingException {
+    	throw new UnsupportedOperationException();
+	}
+    
+	@Override
+	public void setSize(Object array, int newSize) throws BindingException {
+		int oldSize = Array.getLength(array);
+		if (oldSize==newSize) return;
+		throw new BindingException("byte[] is length immutable");
+	}
+
+	@Override
+	public boolean isResizable() {
+		return false;
+	}
+	
+}