X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fserialization%2Fimpl%2FReferableRecordSerializer.java;fp=bundles%2Forg.simantics.databoard%2Fsrc%2Forg%2Fsimantics%2Fdataboard%2Fserialization%2Fimpl%2FReferableRecordSerializer.java;h=c379994a4338f1da045d3e633db4727e495e262e;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/serialization/impl/ReferableRecordSerializer.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/serialization/impl/ReferableRecordSerializer.java
new file mode 100644
index 000000000..c379994a4
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/serialization/impl/ReferableRecordSerializer.java
@@ -0,0 +1,164 @@
+package org.simantics.databoard.serialization.impl;
+
+import gnu.trove.map.hash.TObjectIntHashMap;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.List;
+
+import org.simantics.databoard.binding.RecordBinding;
+import org.simantics.databoard.binding.error.BindingException;
+import org.simantics.databoard.serialization.SerializationException;
+import org.simantics.databoard.serialization.Serializer;
+import org.simantics.databoard.serialization.Serializer.RecursiveSerializer;
+import org.simantics.databoard.type.RecordType;
+
+public class ReferableRecordSerializer extends RecursiveSerializer {
+
+	RecordBinding binding;
+	public Serializer[] componentSerializers;
+	
+	/** The combined size elements, or <code>null</code> */ 
+	Integer fixedSizeOfContent;
+	int minContentSize;
+	
+	public ReferableRecordSerializer(RecordBinding binding, Serializer[] componentSerializers) {
+		this.binding = binding;
+		this.componentSerializers = componentSerializers;
+	}
+	
+	@Override
+	public void finalizeConstruction() {
+		fixedSizeOfContent = null;
+		for (Serializer componentSerializer : componentSerializers) {
+			minContentSize += componentSerializer.getMinSize();
+			Integer componentFixedSize = componentSerializer.getConstantSize();
+			if (componentFixedSize==null) {
+				fixedSizeOfContent = null;
+				break;
+			}
+			fixedSizeOfContent = fixedSizeOfContent==null ? componentFixedSize : fixedSizeOfContent + componentFixedSize; 
+		}
+	}
+
+	boolean referable() {
+		return ((RecordType)binding.type()).isReferable();
+	}
+	
+	@Override
+	public Object deserialize(DataInput in, List<Object> identities) throws IOException {
+		try {
+			int id = in.readInt();
+			if(id > 0)
+				return identities.get(id-1);			
+			
+			Object result = binding.createPartial();
+			identities.add(result);
+			
+//			assertRemainingBytes(in, minContentSize);
+			Object[] temp = new Object[componentSerializers.length];
+			for(int i=0;i<componentSerializers.length;++i)
+				temp[i] = componentSerializers[i].deserialize(in, identities);
+			binding.setComponents(result, temp);
+			
+			return result;
+		} catch (BindingException e) {
+			throw new IOException( e ); 
+		}
+	}
+	
+	@Override
+	public void deserializeTo(DataInput in, List<Object> identities,
+			Object obj) throws IOException {
+		try {
+			int id = in.readInt();
+			if(id > 0) {
+				Object alreadyDeserializedObject = identities.get(id-1);
+				if (alreadyDeserializedObject!=obj) {
+					for (int i=0; i<binding.getComponentCount(); ++i) {
+						Object component = binding.getComponent(alreadyDeserializedObject, i);
+						binding.setComponent(obj, i, component);
+					}
+				}
+				return;
+			}
+			
+			identities.add(obj);
+//			assertRemainingBytes(in, minContentSize);
+			for(int i=0;i<componentSerializers.length;++i) {
+				Serializer cs = componentSerializers[i];
+				boolean csImmutable = binding.getComponentBinding(i).isImmutable();
+				if (csImmutable) {
+					Object component = cs.deserialize(in, identities);
+					binding.setComponent(obj, i, component);
+				} else {
+					Object component = binding.getComponent(obj, i);
+					component = cs.deserializeToTry(in, identities, component);
+					binding.setComponent(obj, i, component);
+				}
+			}
+		} catch (BindingException e) {
+			throw new IOException( e ); 
+		}
+		
+	}
+	
+	@Override
+	public void skip(DataInput in, List<Object> identities) throws IOException, SerializationException {
+		
+		int id = in.readInt();
+		if(id > 0) return;			
+		
+		for(int i=0;i<componentSerializers.length;++i)
+			componentSerializers[i].skip(in, identities);
+	}
+
+	@Override
+	public void serialize(DataOutput out, TObjectIntHashMap<Object> identities, Object obj) throws IOException {
+		try {
+			int id = identities.get(obj);
+			if(id > 0) {
+				out.writeInt(id);
+			}
+			else {
+				out.writeInt(0);
+				identities.put(obj, identities.size() + 1);
+				for(int i=0;i<componentSerializers.length;++i)
+					componentSerializers[i].serialize(out, identities, binding.getComponent(obj, i));
+			}
+		} catch (BindingException e) {
+			throw new IOException( e ); 
+		}
+			
+	}
+
+	@Override
+	public Integer getConstantSize() {
+		return null;
+	}
+
+	@Override
+	public int getSize(Object obj, TObjectIntHashMap<Object> identities) throws IOException {
+		try {
+			int id = identities.get(obj);
+			if (id>0) return 4;
+			identities.put(obj, identities.size()+1);
+			if (fixedSizeOfContent!=null) return 4+fixedSizeOfContent;
+			int result = 4;			
+			for(int i=0;i<componentSerializers.length;++i)
+				result += componentSerializers[i].getSize( binding.getComponent(obj, i), identities );			
+			return result;
+		} catch (BindingException e) {
+			throw new IOException( e ); 
+		}
+			
+	}
+	
+	@Override
+	public int getMinSize() {
+		return 4;
+	}
+	
+}
+