filepermission.html

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<A NAME="FilePermission(java.lang.String, java.lang.String)"><!-- --></A><H3>
FilePermission</H3>
<PRE>
public <B>FilePermission</B>(<A HREF="../../java/lang/String.html">String</A>&nbsp;path,
                      <A HREF="../../java/lang/String.html">String</A>&nbsp;actions)</PRE>
<DL>
<DD>Creates a new FilePermission object with the specified actions.
 <i>path</i> is the pathname of a
 file or directory, and <i>actions</i> contains a comma-separated list of the
 desired actions granted on the file or directory. Possible actions are
 "read", "write", "execute", and "delete". 
 
 <p>A pathname that ends in "/*" (where "/" is
 the file separator character, <code>File.separatorChar</code>) indicates
 a directory and all the files contained in that directory. A pathname
 that ends with "/-" indicates a directory and (recursively) all files
 and subdirectories contained in that directory. The special pathname
 "&lt;&lt;ALL FILES&gt;&gt;" matches all files.
 
 <p>A pathname consisting of a single "*" indicates all the files
 in the current directory, while a pathname consisting of a single "-" 
 indicates all the files in the current directory and
 (recursively) all files and subdirectories contained in the current 
 directory.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>path</CODE> - the pathname of the file/directory.<DD><CODE>actions</CODE> - the action string.</DL>
</DD>
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<A NAME="implies(java.security.Permission)"><!-- --></A><H3>
implies</H3>
<PRE>
public boolean <B>implies</B>(<A HREF="../../java/security/Permission.html">Permission</A>&nbsp;p)</PRE>
<DL>
<DD>Checks if this FilePermission object "implies" the specified permission.
 <P>
 More specifically, this method returns true if:<p>
 <ul>
 <li> <i>p</i> is an instanceof FilePermission,<p>
 <li> <i>p</i>'s actions are a proper subset of this
 object's actions, and <p>
 <li> <i>p</i>'s pathname is implied by this object's
      pathname. For example, "/tmp/*" implies "/tmp/foo", since
      "/tmp/*" encompasses the "/tmp" directory and all files in that
      directory, including the one named "foo".
 </ul><DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/security/Permission.html#implies(java.security.Permission)">implies</A></CODE> in class <CODE><A HREF="../../java/security/Permission.html">Permission</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p</CODE> - the permission to check against.<DT><B>Returns:</B><DD>true if the specified permission is implied by this object,
 false if not.</DL>
</DD>
</DL>
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<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="../../java/lang/Object.html">Object</A>&nbsp;obj)</PRE>
<DL>
<DD>Checks two FilePermission objects for equality. Checks that <i>obj</i> is
 a FilePermission, and has the same pathname and actions as this object.
 <P><DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/security/Permission.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../java/security/Permission.html">Permission</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - the object we are testing for equality with this object.<DT><B>Returns:</B><DD>true if obj is a FilePermission, and has the same pathname and
 actions as this FilePermission object.</DL>
</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Returns the hash code value for this object.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/security/Permission.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../java/security/Permission.html">Permission</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a hash code value for this object.</DL>
</DD>
</DL>
<HR>

<A NAME="getActions()"><!-- --></A><H3>
getActions</H3>
<PRE>
public <A HREF="../../java/lang/String.html">String</A> <B>getActions</B>()</PRE>
<DL>
<DD>Returns the "canonical string representation" of the actions.
 That is, this method always returns present actions in the following order: 
 read, write, execute, delete. For example, if this FilePermission object
 allows both write and read actions, a call to <code>getActions</code>
 will return the string "read,write".<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/security/Permission.html#getActions()">getActions</A></CODE> in class <CODE><A HREF="../../java/security/Permission.html">Permission</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the canonical string representation of the actions.</DL>
</DD>
</DL>
<HR>

<A NAME="newPermissionCollection()"><!-- --></A><H3>
newPermissionCollection</H3>
<PRE>
public <A HREF="../../java/security/PermissionCollection.html">PermissionCollection</A> <B>newPermissionCollection</B>()</PRE>
<DL>
<DD>Returns a new PermissionCollection object for storing FilePermission 
 objects.
 <p>
 FilePermission objects must be stored in a manner that allows them 
 to be inserted into the collection in any order, but that also enables the 
 PermissionCollection <code>implies</code>
 method to be implemented in an efficient (and consistent) manner.
 
 <p>For example, if you have two FilePermissions:
 <OL>
 <LI>  <code>"/tmp/-", "read"</code>
 <LI>  <code>"/tmp/scratch/foo", "write"</code>
 </OL>
 
 <p>and you are calling the <code>implies</code> method with the FilePermission: 
 
 <pre>
   "/tmp/scratch/foo", "read,write", 
 </pre>
 
 then the <code>implies</code> function must
 take into account both the "/tmp/-" and "/tmp/scratch/foo"
 permissions, so the effective permission is "read,write",
 and <code>implies</code> returns true. The "implies" semantics for 
 FilePermissions are handled properly by the PermissionCollection object
 returned by this <code>newPermissionCollection</code> method.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../java/security/Permission.html#newPermissionCollection()">newPermissionCollection</A></CODE> in class <CODE><A HREF="../../java/security/Permission.html">Permission</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a new PermissionCollection object suitable for storing 
 FilePermissions.</DL>
</DD>
</DL>
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