Apache Derby Database Engine and Embedded JDBC Driver 10.17.1.0 · org.apache.derby.iapi.services.io.ApplicationObjectInputStream

Modifier and Type	Field and Description
protected ClassFactory	cf
protected ObjectStreamClass	initialClass

Modifier and Type

Field and Description

protected ClassFactory

protected ObjectStreamClass

initialClass

Access	Constructor and Description
pack-priv	ApplicationObjectInputStream(InputStream in, ClassFactory cf)

Access

Constructor and Description

pack-priv

ApplicationObjectInputStream(InputStream in, ClassFactory cf)

Modifier and Type	Method and Description
public String	getErrorInfo() Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getErrorInfo.
public Exception	getNestedException() Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getNestedException.
protected Class<T>	resolveClass(ObjectStreamClass an instance of class `ObjectStreamClass` v) Overrides java.io.ObjectInputStream.resolveClass. Load the local class equivalent of the specified stream class description.

Modifier and Type

Method and Description

public String

getErrorInfo()

Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getErrorInfo.

public Exception

getNestedException()

Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getNestedException.

protected Class<T>

resolveClass(ObjectStreamClass

an instance of class ObjectStreamClass

Overrides java.io.ObjectInputStream.resolveClass.

Load the local class equivalent of the specified stream class description.

cf	back to summary
protected ClassFactory cf

back to summary

protected ClassFactory cf

initialClass	back to summary
protected ObjectStreamClass initialClass

initialClass

back to summary

protected ObjectStreamClass initialClass

ApplicationObjectInputStream	back to summary
pack-priv ApplicationObjectInputStream(InputStream in, ClassFactory cf) throws IOException

ApplicationObjectInputStream

back to summary

pack-priv ApplicationObjectInputStream(InputStream in, ClassFactory cf) throws IOException

Method Detail

getErrorInfo	back to summary
public String getErrorInfo() Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getErrorInfo.

getNestedException	back to summary
public Exception getNestedException() Implements org.apache.derby.iapi.services.io.ErrorObjectInput.getNestedException.

resolveClass back to summary

resolveClass	back to summary
protected Class<T> resolveClass(ObjectStreamClass v) throws IOException, ClassNotFoundException Overrides java.io.ObjectInputStream.resolveClass. Doc from java.io.ObjectInputStream.resolveClass. Load the local class equivalent of the specified stream class description. Subclasses may implement this method to allow classes to be fetched from an alternate source. The corresponding method in `ObjectOutputStream` is `annotateClass`. This method will be invoked only once for each unique class in the stream. This method can be implemented by subclasses to use an alternate loading mechanism but must return a `Class` object. Once returned, if the class is not an array class, its serialVersionUID is compared to the serialVersionUID of the serialized class, and if there is a mismatch, the deserialization fails and an `InvalidClassException` is thrown. The default implementation of this method in `ObjectInputStream` returns the result of calling `Class.forName(desc.getName(), false, loader)` Class.forName(desc.getName(), false, loader) where `loader` is the first class loader on the current thread's stack (starting from the currently executing method) that is neither the platform class loader nor its ancestor; otherwise, `loader` is the platform class loader. If this call results in a `ClassNotFoundException` and the name of the passed `ObjectStreamClass` instance is the Java language keyword for a primitive type or void, then the `Class` object representing that primitive type or void will be returned (e.g., an `ObjectStreamClass` with the name `"int"` will be resolved to `Integer.TYPE`). Otherwise, the `ClassNotFoundException` will be thrown to the caller of this method. Parameters v:ObjectStreamClass an instance of class `ObjectStreamClass` Returns:Class<T> a `Class` object corresponding to `desc` Exceptions IOException: any of the usual Input/Output exceptions. ClassNotFoundException: if class of a serialized object cannot be found.

protected Class<T> resolveClass(ObjectStreamClass v) throws IOException, ClassNotFoundException

Overrides java.io.ObjectInputStream.resolveClass.

Doc from java.io.ObjectInputStream.resolveClass.

Load the local class equivalent of the specified stream class description. Subclasses may implement this method to allow classes to be fetched from an alternate source.

The corresponding method in ObjectOutputStream is annotateClass. This method will be invoked only once for each unique class in the stream. This method can be implemented by subclasses to use an alternate loading mechanism but must return a Class object. Once returned, if the class is not an array class, its serialVersionUID is compared to the serialVersionUID of the serialized class, and if there is a mismatch, the deserialization fails and an InvalidClassException is thrown.

The default implementation of this method in ObjectInputStream returns the result of calling

Class.forName(desc.getName(), false, loader)

where loader is the first class loader on the current thread's stack (starting from the currently executing method) that is neither the platform class loader nor its ancestor; otherwise, loader is the platform class loader. If this call results in a ClassNotFoundException and the name of the passed ObjectStreamClass instance is the Java language keyword for a primitive type or void, then the Class object representing that primitive type or void will be returned (e.g., an ObjectStreamClass with the name "int" will be resolved to Integer.TYPE). Otherwise, the ClassNotFoundException will be thrown to the caller of this method.

Parameters

v:ObjectStreamClass: an instance of class ObjectStreamClass

Returns:Class<T>

a Class object corresponding to desc

Exceptions

IOException:: any of the usual Input/Output exceptions.
ClassNotFoundException:: if class of a serialized object cannot be found.

pack-priv Class ApplicationObjectInputStream

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