bundles/org.simantics.databoard/src/org/simantics/databoard/serialization/impl/ByteArraySerializer.java

   1 package org.simantics.databoard.serialization.impl;\r
   2 \r
   3 import java.io.DataInput;\r
   4 import java.io.DataOutput;\r
   5 import java.io.IOException;\r
   6 import java.util.List;\r
   7 \r
   8 import org.simantics.databoard.binding.ArrayBinding;\r
   9 import org.simantics.databoard.binding.error.BindingException;\r
  10 import org.simantics.databoard.serialization.SerializationException;\r
  11 import org.simantics.databoard.serialization.Serializer.NonRecursiveSerializer;\r
  12 import org.simantics.databoard.type.ArrayType;\r
  13 import org.simantics.databoard.util.Range;\r
  14 \r
  15 public class ByteArraySerializer extends NonRecursiveSerializer {\r
  16 \r
  17         Range length;\r
  18         Integer fixedLength, fixedSize;\r
  19         \r
  20         public ByteArraySerializer(ArrayBinding binding)\r
  21         {\r
  22                 ArrayType arrayType = (ArrayType) binding.type();\r
  23                 this.length = arrayType.getLength();\r
  24                 if (length!=null && length.getLower().equals(length.getUpper()) && length.getLower().getValue()!=null)\r
  25                 {\r
  26                         fixedLength = length.getLower().getValue().intValue();\r
  27                         fixedSize = fixedLength * 1;\r
  28                 }\r
  29         }\r
  30         \r
  31         @Override\r
  32         public Object deserialize(DataInput in)\r
  33         throws IOException \r
  34         {\r
  35                 int length = fixedSize != null ? fixedLength : in.readInt();\r
  36                 if (length<0) throw new SerializationException("Cannot use negative array length");\r
  37                 assertRemainingBytes(in, length);                       \r
  38                 \r
  39                 byte[] array = new byte[length];\r
  40                 in.readFully(array);\r
  41                 return array;\r
  42         }\r
  43         \r
  44         @Override\r
  45         public void deserializeTo(DataInput in, Object obj) throws IOException {\r
  46                 try {\r
  47                         int length = fixedLength != null ? fixedLength : in.readInt();                  \r
  48                         byte[] array = (byte[]) obj;\r
  49                         if (length!=array.length) throw new BindingException("primitive array is size immutable");\r
  50                         assertRemainingBytes(in, length);                       \r
  51                         in.readFully(array);\r
  52                 } catch (BindingException e) {\r
  53                         throw new IOException( e ); \r
  54                 }\r
  55         }\r
  56         \r
  57         public Object deserializeToTry(DataInput in, List<Object> identities, Object obj) throws IOException\r
  58         {\r
  59                 int length = fixedLength != null ? fixedLength : in.readInt();\r
  60                 byte[] array = (byte[]) obj;\r
  61                 if (length!=array.length) obj = new byte[ length ];\r
  62                 assertRemainingBytes(in, length);                       \r
  63                 in.readFully(array);            \r
  64                 return array;\r
  65         }\r
  66 \r
  67         @Override\r
  68         public void skip(DataInput in)\r
  69         throws IOException {\r
  70                 int length = fixedSize != null ? fixedLength : in.readInt();                    \r
  71                 in.skipBytes( length );\r
  72         }\r
  73         \r
  74         @Override\r
  75         public void serialize(DataOutput out, Object obj)\r
  76         throws IOException \r
  77         {\r
  78                 byte[] array = (byte[])obj;\r
  79                 if (fixedSize==null) \r
  80                         out.writeInt(array.length);\r
  81                 out.write(array);\r
  82         }\r
  83 \r
  84         @Override\r
  85         public Integer getConstantSize() {\r
  86                 return fixedSize;\r
  87         }\r
  88 \r
  89         @Override\r
  90         public int getSize(Object obj) {\r
  91                 if (fixedSize!=null) return fixedSize;\r
  92                 byte[] array = (byte[])obj;                     \r
  93                 return 4 + array.length;\r
  94         }\r
  95         \r
  96         @Override\r
  97         public int getMinSize() {\r
  98                 return fixedSize != null ? fixedSize : 4;\r
  99         }\r
 100         \r
 101 }