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## com.bea.content
Class PathHelper

    java.lang.Object
      com.bea.content.PathHelper

public class PathHelper
extends Object

Utility class to manipulate unix path like Strings such as /a/b/c/d. Paths are always expected to begin with / and end without it. Therefore neither a/b/c or /a/b/c/ are considered valid. Most operations take a path which must be in correct form and also an element to add/remove from the path. This element must not contain the SEPARATOR / as any part of itself.

Field Summary
`static String` | `SEPARATOR`

Constructor Summary
`PathHelper()`

Method Summary
`static String` | `addFirst(String first, String path)` Adds a new element to the front of a path.
`static String` | `addLast(String path, String last)` Adds a new element to the end of a path.
`static String` | `getFirst(String path)` Gets the first element in the path.
`static String` | `getLast(String path)` Gets the last element in the path.
`static String` | `getLineage(String path)` Removes the last element and returns the result.
`int` | `getNameCount(String path)` Gets the number of Nodes in the path.
`static String` | `getParentName(String path)` Gets the second to last element in a path.
`String` | `getSubPath(String path, int size)` Returns the lineage with the number of parents specified.
`static boolean` | `isValid(String path)` Checks if the path is valid: must be non null must be > 0 characters must start with a SEPARATOR must not end with a SEPARATOR
`static String` | `removeFirst(String path)` Removes the first element from path and returns the result.
`static String` | `trimPath(String path, int size)` Trims the path to the given size.

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

Field Detail

### SEPARATOR

    public static final String SEPARATOR

See Also:
  Constant Field Values

Constructor Detail

### PathHelper

    public PathHelper()

Method Detail

### isValid

    public static boolean isValid(String path)

  Checks if the path is valid:
  - must be non null
  - must be > 0 characters
  - must start with a SEPARATOR
  - must not end with a SEPARATOR

  Parameters:
    `path` - - the path to validate
  Returns:
    true if the above are fullfilled, false if the path is incorrect

### addLast

    public static String addLast(String path,
                                 String last)

  Adds a new element to the end of a path. For example last = last and path = /a/b/c would return /a/b/c/last.

  Parameters:
    `path` - - the path to add an element to.
  Returns:
    the updated path

### addFirst

    public static String addFirst(String first,
                                  String path)

  Adds a new element to the front of a path. For example first = first and path = /a/b/c would return /first/a/b/c.

  Parameters:
    `first` - - the element to add. Must not contain / as part of the String.
    `path` - - the path to add an element to.
  Returns:
    the updated path

### getLast

    public static String getLast(String path)

  Gets the last element in the path. For example, /a/b/c/last would return last

### getFirst

    public static String getFirst(String path)

  Gets the first element in the path. For example, /first/a/b/c would return first.

### getParentName

    public static String getParentName(String path)

  Gets the second to last element in a path. For example, /a/b/c/parent/e would return parent

### removeFirst

    public static String removeFirst(String path)

  Removes the first element from path and returns the result. For example, /first/a/b/c would return /a/b/c If there is only one element then return an empty String.

### getLineage

    public static String getLineage(String path)

  Removes the last element and returns the result. For example, /a/b/c/d would return /a/b/c

### trimPath

    public static String trimPath(String path,
                                  int size)

  Trims the path to the given size. For example, path = /one/two/three/four and size = 10 would return /one/two/t

### getSubPath

    public String getSubPath(String path,
                             int size)

  Returns the lineage with the number of parents specified. For example, /a/b/c/d/e with a size of 3 would return /a/b/c

### getNameCount

    public int getNameCount(String path)

  Gets the number of Nodes in the path. For example, /a/b/c/d would return 4.

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Copyright © 2004 BEA Systems, Inc. All Rights Reserved