com.metamatrix.core.util
Class ExternalizeUtil

java.lang.Object
  com.metamatrix.core.util.ExternalizeUtil

public class ExternalizeUtil
extends java.lang.Object

Utilities used by Externalizable classes to read/write objects from ObjectInput/ObjectOutput instances.

Method Summary

static java.util.List	readList(java.io.ObjectInput in) Reads a List that was written by this utility class.
static java.util.Map	readMap(java.io.ObjectInput in) Reads a Map that was written by this utility class
static java.lang.String[]	readStringArray(java.io.ObjectInput in) Reads an array of String that was written to the ouput by this utility class
static java.lang.Throwable	readThrowable(java.io.ObjectInput in)
static void	writeArray(java.io.ObjectOutput out, java.lang.Object[] array) Writes an array to the output.
static void	writeCollection(java.io.ObjectOutput out, java.util.Collection coll) Writes a Collection to the output using its Iterator.
static void	writeList(java.io.ObjectOutput out, java.util.List list) Writes a List to the output using its indexes.
static void	writeMap(java.io.ObjectOutput out, java.util.Map map) Writes the key-value pairs of the given map to the output.
static void	writeThrowable(java.io.ObjectOutput out, java.lang.Throwable t)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

writeArray

public static void writeArray(java.io.ObjectOutput out,
                              java.lang.Object[] array)
                       throws java.io.IOException

Writes an array to the output.

Parameters:

out - the output instance

array - reference to an array. Can be null.

Throws:

java.io.IOException

writeCollection

public static void writeCollection(java.io.ObjectOutput out,
                                   java.util.Collection coll)
                            throws java.io.IOException

Writes a Collection to the output using its Iterator.

Parameters:

out - the output instance

coll - reference to a Collection. Can be null.

Throws:

java.io.IOException

writeList

public static void writeList(java.io.ObjectOutput out,
                             java.util.List list)
                      throws java.io.IOException

Writes a List to the output using its indexes.

Parameters:

out - the output instance

list - reference to a List. Can be null.

Throws:

java.io.IOException

writeMap

public static void writeMap(java.io.ObjectOutput out,
                            java.util.Map map)
                     throws java.io.IOException

Writes the key-value pairs of the given map to the output.

Parameters:

out - the output instance

list - reference to a Map. Can be null.

Throws:

java.io.IOException

readStringArray

public static java.lang.String[] readStringArray(java.io.ObjectInput in)
                                          throws java.io.IOException,
                                                 java.lang.ClassNotFoundException

Reads an array of String that was written to the ouput by this utility class

Parameters:

in -

Returns:

a non-null String[]

Throws:

java.io.IOException

java.lang.ClassNotFoundException

readList

public static java.util.List readList(java.io.ObjectInput in)
                               throws java.io.IOException,
                                      java.lang.ClassNotFoundException

Reads a List that was written by this utility class.

Parameters:

in -

Returns:

a non-null List

Throws:

java.io.IOException

java.lang.ClassNotFoundException

readMap

public static java.util.Map readMap(java.io.ObjectInput in)
                             throws java.io.IOException,
                                    java.lang.ClassNotFoundException

Reads a Map that was written by this utility class

Parameters:

in -

Returns:

a non-null Map

Throws:

java.io.IOException

java.lang.ClassNotFoundException

writeThrowable

public static void writeThrowable(java.io.ObjectOutput out,
                                  java.lang.Throwable t)
                           throws java.io.IOException

Throws:

java.io.IOException

readThrowable

public static java.lang.Throwable readThrowable(java.io.ObjectInput in)
                                         throws java.io.IOException,
                                                java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException