X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FLinkedListBinding.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fbinding%2Fimpl%2FLinkedListBinding.java;h=04287ef07144b07ff9cbc70421ab042e03d688ec;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/LinkedListBinding.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/LinkedListBinding.java
new file mode 100644
index 000000000..04287ef07
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/LinkedListBinding.java
@@ -0,0 +1,201 @@
+/*******************************************************************************
+ *  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.util.Collection;
+import java.util.IdentityHashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
+
+import org.simantics.databoard.binding.ArrayBinding;
+import org.simantics.databoard.binding.Binding;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.type.ArrayType;
+import org.simantics.databoard.util.IdentityPair;
+
+/**
+ * CollectionListBinding binds ArrayType to java.util.LinkedList
+ *
+ * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
+ */
+public class LinkedListBinding extends ArrayBinding {
+
+	public LinkedListBinding(ArrayType type, Binding componentBinding) {
+		super(type, componentBinding);
+		if (type==null) throw new IllegalArgumentException("null arg");
+		this.type = type;
+	}
+	
+	@Override
+	public Object create() {
+		return new LinkedList<Object>();
+	}
+	
+	/**
+	 * Create new ArrayList
+	 */
+	@Override
+	public Object create(int length, Iterator<Object> values) {
+		LinkedList<Object> result = new LinkedList<Object>(); 
+		while (values.hasNext()) result.add(values.next());		
+		return result;
+	}
+	
+    public Object create(Collection<Object> collection)
+    throws BindingException {
+    	return new LinkedList<Object>( collection );
+    }	
+
+	public Object create(Object[] values) {
+		LinkedList<Object> array = new LinkedList<Object>();
+		for (int i=0; i<values.length; i++)
+			array.add(values[i]);
+		return array;
+	}
+	
+	@SuppressWarnings("unchecked")
+	@Override
+	public Object get(Object array, int index) throws BindingException {
+		if (!isInstance(array)) throw new BindingException("Unexpected class "+array.getClass().getSimpleName()+", java.util.List expected");
+		List<Object> list = (List<Object>) array;
+		return list.get(index);
+	}
+	
+	@SuppressWarnings("unchecked")
+    @Override
+	public void getAll(Object array, Object[] result) throws BindingException {
+		List<Object> list = (List<Object>) array;
+		int index = 0;
+		for (Object o : list) {
+			result[index++] = o;
+		}
+	}
+	
+	@SuppressWarnings("unchecked")
+    @Override
+	public void set(Object array, int index, Object value)
+			throws BindingException {
+		List<Object> list = (List<Object>) array;
+		list.set(index, value);
+	}
+
+	@SuppressWarnings("unchecked")
+	@Override
+	public int size(Object array) throws BindingException {		
+		if (!isInstance(array)) throw new BindingException("Unexpected class "+array.getClass().getSimpleName()+", java.util.List expected");		
+		List<Object> list = (List<Object>) array;
+		return list.size();
+	}
+
+	@Override
+	public boolean isInstance(Object obj) {
+		return obj instanceof LinkedList<?>;
+	}	
+	
+    @SuppressWarnings("unchecked")
+    @Override
+    public void add(Object array, int index, Object element)
+    		throws BindingException, IndexOutOfBoundsException {
+		List<Object> list = (List<Object>) array;
+		list.add(index, element);
+    }	
+	
+	@SuppressWarnings("unchecked")
+	@Override
+	public void remove(Object array, int index, int count) throws BindingException {
+		LinkedList<Object> list = (LinkedList<Object>) array;
+		if (index<0 || index>=list.size()) throw new IndexOutOfBoundsException();
+		if (index==0) {
+			list.removeFirst();
+			return;
+		}
+		if (index==list.size()) {
+			list.removeLast();
+			return;
+		}
+		Iterator<Object> iter = list.iterator();
+		for (int i=0; i<index; i++)
+			iter.next();
+		for (int i=0; i<count; i++) {
+			iter.next();
+			iter.remove();
+		}
+	}
+	
+    @Override
+    public int deepHashValue(Object value, IdentityHashMap<Object, Object> hashedObjects) throws BindingException {
+    	int result = 1;
+    	LinkedList<?> list = (LinkedList<?>) value;
+    	Iterator<?> iter = list.iterator();
+    	while (iter.hasNext()) {
+    		Object element = iter.next();
+    		result = 31*result + componentBinding.deepHashValue(element, hashedObjects);
+    	}
+    	return result;
+    }
+    
+    @SuppressWarnings("unchecked")
+    @Override
+    public int deepCompare(Object o1, Object o2,
+    		Set<IdentityPair<Object, Object>> compareHistory)
+    		throws BindingException {
+		// Compare Lengths
+		int l1 = size(o1);
+		int l2 = size(o2);
+		int dif = l1 - l2;
+		if (dif!=0) return dif;
+		// Compare elements
+		Binding c = getComponentBinding();
+		Iterator<Object> i1 = ((LinkedList<Object>) o1).iterator();
+		Iterator<Object> i2 = ((LinkedList<Object>) o2).iterator();
+		while(i1.hasNext()) {
+			Object e1 = i1.next();
+			Object e2 = i2.next();			
+			dif = c.deepCompare(e1, e2, compareHistory);
+			if (dif!=0) return dif;
+		}
+		return 0;
+    }    
+    
+	@Override
+	public void setSize(Object array, int newSize) throws BindingException {
+		@SuppressWarnings("unchecked")
+		List<Object> list = (List<Object>) array;
+		int oldSize = list.size();
+		if (oldSize==newSize) return;
+		
+		if (oldSize>newSize) {
+			for (int i=oldSize-1; i<=newSize; i--)
+				list.remove(i);
+			return;
+		} 
+		
+		int c = newSize - oldSize;
+		for (int i=0; i<c; i++) {
+			list.add( componentBinding.createDefault() );
+		}
+	}		
+	
+	@Override
+	public boolean isImmutable() {
+		return false;
+	}
+
+	@Override
+	public boolean isResizable() {
+		return true;
+	}
+	
+}
+