Path (Apache Ant API)
Keywords: org.apache.tools.ant.types.Path class

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## org.apache.tools.ant.types
Class Path

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.types.DataType
              org.apache.tools.ant.types.Path

All Implemented Interfaces:
  java.lang.Cloneable

public class Path
extends DataType
implements java.lang.Cloneable

This object represents a path as used by CLASSPATH or PATH environment variable.

`<sometask>
<somepath>
<pathelement location="/path/to/file.jar" />
<pathelement path="/path/to/file2.jar:/path/to/class2;/path/to/class3" />
<pathelement location="/path/to/file3.jar" />
<pathelement location="/path/to/file4.jar" />
</somepath>
</sometask>
`

The object implemention `sometask` must provide a method called `createSomepath` which returns an instance of `Path`. Nested path definitions are handled by the Path object and must be labeled `pathelement`.

The path element takes a parameter `path` which will be parsed and split into single elements. It will usually be used to define a path from an environment variable.

Author:
  Thomas.Haas@softwired-inc.com, Stefan Bodewig

Nested Class Summary
`class` | `Path.PathElement` Helper class, holds the nested `<pathelement>` values.

Field Summary
`static Path` | `systemClasspath` The system classspath as a Path object

Fields inherited from class org.apache.tools.ant.types.DataType
`checked, description, ref`

Fields inherited from class org.apache.tools.ant.ProjectComponent
`project`

Constructor Summary
`Path(Project project)`
`Path(Project p, java.lang.String path)` Invoked by IntrospectionHelper for `setXXX(Path p)` attribute setters.

Method Summary
`void` | `addDirset(DirSet dset)` Adds a nested `<dirset>` element.
`void` | `addExisting(Path source)` Adds the components on the given path which exist to this Path.
`void` | `addExtdirs(Path extdirs)` Emulation of extdirs feature in java >= 1.2.
`void` | `addFilelist(FileList fl)` Adds a nested `<filelist>` element.
`void` | `addFileset(FileSet fs)` Adds a nested `<fileset>` element.
`void` | `addJavaRuntime()` Add the Java Runtime classes to this Path instance.
`void` | `append(Path other)` Append the contents of the other Path instance to this.
`java.lang.Object` | `clone()` Return a Path that holds the same elements as this instance.
`Path` | `concatSystemClasspath()` Concatenates the system class path in the order specified by the ${build.sysclasspath} property - using "last" as default value.
`Path` | `concatSystemClasspath(java.lang.String defValue)` Concatenates the system class path in the order specified by the ${build.sysclasspath} property - using the supplied value if ${build.sysclasspath} has not been set.
`Path` | `createPath()` Creates a nested `<path>` element.
`Path.PathElement` | `createPathElement()` Creates the nested `<pathelement>` element.
`protected void` | `dieOnCircularReference(java.util.Stack stk, Project p)` Overrides the version of DataType to recurse on all DataType child elements that may have been added.
`java.lang.String[]` | `list()` Returns all path elements defined by this and nested path objects.
`void` | `setLocation(java.io.File location)` Adds a element definition to the path.
`void` | `setPath(java.lang.String path)` Parses a path definition and creates single PathElements.
`void` | `setRefid(Reference r)` Makes this instance in effect a reference to another Path instance.
`int` | `size()` How many parts does this Path instance consist of.
`java.lang.String` | `toString()` Returns a textual representation of the path, which can be used as CLASSPATH or PATH environment variable definition.
`static java.lang.String` | `translateFile(java.lang.String source)` Returns its argument with all file separator characters replaced so that they match the local OS conventions.
`protected static boolean` | `translateFileSep(java.lang.StringBuffer buffer, int pos)` Translates all occurrences of / or \ to correct separator of the current platform and returns whether it had to do any replacements.
`static java.lang.String[]` | `translatePath(Project project, java.lang.String source)` Splits a PATH (with : or ; as separators) into its parts.

Methods inherited from class org.apache.tools.ant.types.DataType
`circularReference, getCheckedRef, getDescription, isReference, noChildrenAllowed, setDescription, tooManyAttributes`

Methods inherited from class org.apache.tools.ant.ProjectComponent
`getProject, log, log, setProject`

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

Field Detail

### systemClasspath

    public static Path systemClasspath

  The system classspath as a Path object

Constructor Detail

### Path

    public Path(Project p,
                java.lang.String path)

  Invoked by IntrospectionHelper for `setXXX(Path p)` attribute setters.

### Path

    public Path(Project project)

Method Detail

### setLocation

    public void setLocation(java.io.File location)
                     throws BuildException

  Adds a element definition to the path.

  Parameters:
    `location` - the location of the element to add (must not be `null` nor empty.
  Throws:
    `BuildException`

### setPath

    public void setPath(java.lang.String path)
                 throws BuildException

  Parses a path definition and creates single PathElements.

  Parameters:
    `path` - the path definition.
  Throws:
    `BuildException`

### setRefid

    public void setRefid(Reference r)
                  throws BuildException

  Makes this instance in effect a reference to another Path instance.

  You must not set another attribute or nest elements inside this element if you make it a reference.

  Overrides:
    `setRefid` in class `DataType`
  Throws:
    `BuildException`

### createPathElement

    public Path.PathElement createPathElement()
                                       throws BuildException

  Creates the nested `<pathelement>` element.

  Throws:
    `BuildException`

### addFileset

    public void addFileset(FileSet fs)
                    throws BuildException

  Adds a nested `<fileset>` element.

  Throws:
    `BuildException`

### addFilelist

    public void addFilelist(FileList fl)
                     throws BuildException

  Adds a nested `<filelist>` element.

  Throws:
    `BuildException`

### addDirset

    public void addDirset(DirSet dset)
                   throws BuildException

  Adds a nested `<dirset>` element.

  Throws:
    `BuildException`

### createPath

    public Path createPath()
                    throws BuildException

  Creates a nested `<path>` element.

  Throws:
    `BuildException`

### append

    public void append(Path other)

  Append the contents of the other Path instance to this.

### addExisting

    public void addExisting(Path source)

  Adds the components on the given path which exist to this Path. Components that don't exist, aren't added.

  Parameters:
    `source` - - source path whose components are examined for existence

### list

    public java.lang.String[] list()

  Returns all path elements defined by this and nested path objects.

  Returns:
    list of path elements.

### toString

    public java.lang.String toString()

  Returns a textual representation of the path, which can be used as CLASSPATH or PATH environment variable definition.

  Returns:
    a textual representation of the path.

### translatePath

    public static java.lang.String[] translatePath(Project project,
                                                   java.lang.String source)

  Splits a PATH (with : or ; as separators) into its parts.

### translateFile

    public static java.lang.String translateFile(java.lang.String source)

  Returns its argument with all file separator characters replaced so that they match the local OS conventions.

### translateFileSep

    protected static boolean translateFileSep(java.lang.StringBuffer buffer,
                                              int pos)

  Translates all occurrences of / or \ to correct separator of the current platform and returns whether it had to do any replacements.

### size

    public int size()

  How many parts does this Path instance consist of.

### clone

    public java.lang.Object clone()

  Return a Path that holds the same elements as this instance.

### dieOnCircularReference

    protected void dieOnCircularReference(java.util.Stack stk,
                                          Project p)
                                   throws BuildException

  Overrides the version of DataType to recurse on all DataType child elements that may have been added.

  Overrides:
    `dieOnCircularReference` in class `DataType`
  Throws:
    `BuildException`

### concatSystemClasspath

    public Path concatSystemClasspath()

  Concatenates the system class path in the order specified by the ${build.sysclasspath} property - using "last" as default value.

### concatSystemClasspath

    public Path concatSystemClasspath(java.lang.String defValue)

  Concatenates the system class path in the order specified by the ${build.sysclasspath} property - using the supplied value if ${build.sysclasspath} has not been set.

### addJavaRuntime

    public void addJavaRuntime()

  Add the Java Runtime classes to this Path instance.

### addExtdirs

    public void addExtdirs(Path extdirs)

  Emulation of extdirs feature in java >= 1.2. This method adds all files in the given directories (but not in sub-directories!) to the classpath, so that you don't have to specify them all one by one.

  Parameters:
    `extdirs` - - Path to append files to

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