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## org.jbpm.compiler.xml.processes
Class RuleFlowMigrator

    java.lang.Object
      org.jbpm.compiler.xml.processes.RuleFlowMigrator

    public class RuleFlowMigrator

extends Object

Class the migrates drools version 4 .rfm and .rf ruleflow files to version 5 .rf and .rfm ruleflows.

Constructor Summary
`RuleFlowMigrator()`

Method Summary
`static String` | `convertReaderToString(Reader reader)` Converts the contents of the given Reader into a string.
`static void` | `main(String[] args)` Test application that reads a given source file containing a drools 4 .rf and writes it to another given file location as a drools 5 .rf file.
`static boolean` | `needToMigrateRF(String xml)` Returns true if the given .rf (graphical) ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.
`static boolean` | `needToMigrateRFM(String xml)` Returns true if the given .rfm ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.
`static String` | `portRFMToCurrentVersion(String xml)` Returns a drools 5 version of a given drools 4 .rfm ruleflow in string format.
`static String` | `portRFToCurrentVersion(String xml)` Returns a drools 5 version of a given drools 4 .rf (Graphical) ruleflow in string format.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### RuleFlowMigrator

    public RuleFlowMigrator()

Method Detail

### portRFToCurrentVersion

    public static String portRFToCurrentVersion(String xml)
                                         throws Exception

  Returns a drools 5 version of a given drools 4 .rf (Graphical) ruleflow in string format. Note that this method assumes the given ruleflow is a valid version 4 .rf ruleflow - this can be checked using the needToMigrateRF method.

  Parameters:
    `xml` - Drools 4 ruleflow (.rf) in xml format
  Returns:
    drools 5 version of a given drools 4 .rf (Graphical) ruleflow in string format.
  Throws:
    `Exception`

### portRFMToCurrentVersion

    public static String portRFMToCurrentVersion(String xml)
                                          throws Exception

  Returns a drools 5 version of a given drools 4 .rfm ruleflow in string format. Note that this method assumes the given ruleflow is a valid version 4 .rfm ruleflow - this can be checked using the needToMigrateRFM method. The return version 5 xml can be used as a .rf (graphical) ruleflow, but its nodes do not contains positional data.

  Parameters:
    `xml` - Drools 4 ruleflow (.rfm) in xml format
  Returns:
    drools 5 version of a given drools 4 .rfm ruleflow in string format.
  Throws:
    `Exception`

### needToMigrateRF

    public static boolean needToMigrateRF(String xml)
                                   throws Exception

  Returns true if the given .rf (graphical) ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.

  Parameters:
    `xml` - a .rf ruleflow in xml format
  Returns:
    true if the given .rf (graphical) ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.
  Throws:
    `Exception`

### needToMigrateRFM

    public static boolean needToMigrateRFM(String xml)
                                    throws Exception

  Returns true if the given .rfm ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.

  Parameters:
    `xml` - a .rfm ruleflow in xml format
  Returns:
    true if the given .rfm graphical ruleflow xml is a version 4 ruleflow that needs to be migrated to version 5, and returns false otherwise.
  Throws:
    `Exception`

### convertReaderToString

    public static String convertReaderToString(Reader reader)
                                        throws IOException

  Converts the contents of the given Reader into a string. WARNING: the given string is not reset (as not all readers support reset). Consequently, anny further attempt to read from the given reader will return nothing, unless you reset the reader.

  Parameters:
    `reader` -
  Returns:
    he contents of the given Reader into a string.
  Throws:
    `IOException`

### main

    public static final void main(String[] args)

  Test application that reads a given source file containing a drools 4 .rf and writes it to another given file location as a drools 5 .rf file.

  Parameters:
    `args` - an array whose first element is the source filename and the second element is the the destination filename to which the transformed ruleflow is written

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