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changes.mady.by.user Alexey Goncharuk

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changes.mady.by.user Alexey Goncharuk

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Code Block
languagejava
/**
 * Abstracted binary representation of objects.
 */
public interface IgniteObject {
    /**
     * Gets portable object type ID.
     *
     * @return Type ID.
     */
    public int typeId();

    /**
     * Gets fully deserialized instance of portable object.
     *
     * @return Fully deserialized instance of portable object.
     */
    @Nullable public <T> T deserialize() throws IgniteException;

    /**
     * Gets field value.
     *
     * @param fieldName Field name.
     * @return Field value.
     */
    @Nullable public <T> T field(String fieldName);

    /**
     * Checks whether field is set.
     *
     * @param fieldName Field name.
     * @return {@code true} if field is set.
     */
    public boolean hasField(String fieldName);
}

 

New component: CacheObjectManager

Default implementation of CacheObjectManager assumes that it is impossible to read a field from an object without deserialization.

 

...

Code Block
languagejava
titleCacheObjectManager
/**
 *
 */
public interface CacheObjectFactory {
    /**
     * @paramGets objthe Object.
source input stream that was *used @paramto userObjcreate If {@code true} then given object is object provided by user and should be copied
     * before stored in cachethis IgniteObject.
     * @return Cache object.
     */
    @Nullable public CacheObjectSeekableDataInput toCacheObjectsource(SeekableDataInput input);
}

 

CacheObjectFactory and MarshallerEx

 

Code Block
languagejava
titleCacheObjectManager
/**
 *
 */
public interface CacheObjectFactory {

    /**
     * @param type Object type.
     * @param bytes Object bytes.
     * @return Cache object.
     */
    public abstract CacheObject toCacheObject(byte type, byte[] bytes);

    /**
     * @param valPtrinput ValueSeekable pointerinput.
     * @param tmp If {@code true} can return temporary instance which is valid while entry lock is held.
     * @return Cache object.
     * @throws IgniteCheckedException If failed./
     */
   @Nullable public abstractIgniteObject CacheObject toCacheObjecttoIgniteObject(long valPtr, boolean tmp) throws IgniteCheckedExceptionSeekableDataInput input);

    /**
     * @param typeName Type name.
     * @return Type ID.
     */
    public abstract int typeId(String typeName);

    /**
     * @param obj Object to get type ID for.
     * @return Type ID.
     */
    public abstract int typeId(Object obj);
...
}

 If marshaller implementation supports fields read without deserialization, it should provide an implementation of CacheObjectManager that is able to convert a user object to the specific CacheObject implementation.

}
Code Block
languagejava
public interface MarshallerEx extends Marshaller {
    public CacheObjectFactory getCacheObjectFactory();
}
Code Block
languagejava
@CacheObjectProcessor(impl=MyCacheObjectProcessor.class)
public class MyMarshaller implements Marshaller {public interface SeekableDataInput extends DataInput {
    public long position();
 
    public void seek(long pos) throws IOException;
 
    public void ensureOnHeap();
}