Package de.intarsys.tools.locator
Class NullLocator
- java.lang.Object
-
- de.intarsys.tools.locator.NullLocator
-
- All Implemented Interfaces:
ISynchronizable
,ILocator
public class NullLocator extends java.lang.Object implements ILocator
-
-
Constructor Summary
Constructors Constructor Description NullLocator()
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
delete()
Delete the artifact referenced by this.boolean
exists()
Answertrue
if the location designated by this exists.ILocator
getChild(java.lang.String name)
The locator for the resourcename
within the context of this.java.lang.String
getFullName()
The full physical name of this.java.io.InputStream
getInputStream()
Return anInputStream
on the data represented by the receiver.long
getLength()
Returns the length of this data container or -1 if unknownjava.lang.String
getLocalName()
The local name of the receiver within its parent.java.io.OutputStream
getOutputStream()
Return anOutputStream
on the location represented by the receiver.ILocator
getParent()
TheILocator
that is one hierarchy level up or null.IRandomAccess
getRandomAccess()
TheIRandomAccess
for this.java.io.Reader
getReader()
AReader
on the data represented by the receiver.java.io.Reader
getReader(java.lang.String encoding)
AReader
on the data represented by the receiver for the given encoding.java.lang.String
getType()
The type of the resource.java.lang.String
getTypedName()
The qualified local name of the receiver within its parent that includes the type specification for the destination if appropriate.java.io.Writer
getWriter()
AWriter
on the location represented by the receiver.java.io.Writer
getWriter(java.lang.String encoding)
AWriter
on the location represented by the receiver for the given encoding.boolean
isDirectory()
Answertrue
if the location designated by this is a directory.boolean
isOutOfSynch()
true
if the component is out of synch.boolean
isReadOnly()
true
if the specified resource is read only.ILocator[]
listLocators(ILocatorNameFilter filter)
Return an array ofILocator
that are children of the receiver that conform tofilter
.void
rename(java.lang.String newName)
Rename the complete physical name tonewName
.void
setReadOnly()
Make the receiver read only.void
synch()
Perform a synchronization with the components physical resources.java.net.URL
toURL()
The location designated by this as anURL
.
-
-
-
Method Detail
-
delete
public void delete() throws java.io.IOException
Description copied from interface:ILocator
Delete the artifact referenced by this.
-
exists
public boolean exists()
Description copied from interface:ILocator
Answertrue
if the location designated by this exists.
-
getChild
public ILocator getChild(java.lang.String name)
Description copied from interface:ILocator
The locator for the resourcename
within the context of this. This may for example be anILocator
to a file within a directory.
-
getFullName
public java.lang.String getFullName()
Description copied from interface:ILocator
The full physical name of this.This method returns a representation that is proprietary to the underlying physical representation, for example a file name, a SQL statement or so on.
- Specified by:
getFullName
in interfaceILocator
- Returns:
- The full physical name of the receiver.
-
getInputStream
public java.io.InputStream getInputStream() throws java.io.IOException
Description copied from interface:ILocator
Return anInputStream
on the data represented by the receiver.- Specified by:
getInputStream
in interfaceILocator
- Returns:
- An
InputStream
on the data represented by the receiver. - Throws:
java.io.IOException
-
getLength
public long getLength() throws java.io.IOException
Description copied from interface:ILocator
Returns the length of this data container or -1 if unknown
-
getLocalName
public java.lang.String getLocalName()
Description copied from interface:ILocator
The local name of the receiver within its parent.- Specified by:
getLocalName
in interfaceILocator
- Returns:
- The local name of the receiver within its parent.
-
getOutputStream
public java.io.OutputStream getOutputStream() throws java.io.IOException
Description copied from interface:ILocator
Return anOutputStream
on the location represented by the receiver.- Specified by:
getOutputStream
in interfaceILocator
- Returns:
- An
OutputStream
on the location represented by the receiver. - Throws:
java.io.IOException
-
getParent
public ILocator getParent()
Description copied from interface:ILocator
TheILocator
that is one hierarchy level up or null. This may be for example the directory where the currently designated resource is found.
-
getRandomAccess
public IRandomAccess getRandomAccess() throws java.io.IOException
Description copied from interface:ILocator
TheIRandomAccess
for this.- Specified by:
getRandomAccess
in interfaceILocator
- Returns:
- The
IRandomAccess
for this. - Throws:
java.io.IOException
-
getReader
public java.io.Reader getReader() throws java.io.IOException
Description copied from interface:ILocator
AReader
on the data represented by the receiver.
-
getReader
public java.io.Reader getReader(java.lang.String encoding) throws java.io.IOException
Description copied from interface:ILocator
AReader
on the data represented by the receiver for the given encoding.
-
getType
public java.lang.String getType()
Description copied from interface:ILocator
The type of the resource. This may be for example a mime type or the file extension of the underlying file.
-
getTypedName
public java.lang.String getTypedName()
Description copied from interface:ILocator
The qualified local name of the receiver within its parent that includes the type specification for the destination if appropriate. This is for example a filename with its correct suffix. Some locator may return the same name as "getLocalName".- Specified by:
getTypedName
in interfaceILocator
- Returns:
- The qualified local name of the receiver within its parent that includes the type specification for the destination if appropriate.
-
getWriter
public java.io.Writer getWriter() throws java.io.IOException
Description copied from interface:ILocator
AWriter
on the location represented by the receiver.
-
getWriter
public java.io.Writer getWriter(java.lang.String encoding) throws java.io.IOException
Description copied from interface:ILocator
AWriter
on the location represented by the receiver for the given encoding.
-
isDirectory
public boolean isDirectory()
Description copied from interface:ILocator
Answertrue
if the location designated by this is a directory. A directory location serves as a container for other resources, you can nevergetInputStream
on this.- Specified by:
isDirectory
in interfaceILocator
- Returns:
- Answer
true
if the location designated by this is a directory.
-
isOutOfSynch
public boolean isOutOfSynch()
Description copied from interface:ISynchronizable
true
if the component is out of synch.- Specified by:
isOutOfSynch
in interfaceISynchronizable
- Returns:
true
if the component is out of synch.
-
isReadOnly
public boolean isReadOnly()
Description copied from interface:ILocator
true
if the specified resource is read only.- Specified by:
isReadOnly
in interfaceILocator
- Returns:
true
if the specified resource is read only.
-
listLocators
public ILocator[] listLocators(ILocatorNameFilter filter) throws java.io.IOException
Description copied from interface:ILocator
Return an array ofILocator
that are children of the receiver that conform tofilter
. This method never returns null.- Specified by:
listLocators
in interfaceILocator
- Parameters:
filter
- The filter used to examine the child resources.- Returns:
- An array of
ILocator
objects that conform to the filter argument. - Throws:
java.io.IOException
-
rename
public void rename(java.lang.String newName) throws java.io.IOException
Description copied from interface:ILocator
Rename the complete physical name tonewName
.
-
setReadOnly
public void setReadOnly()
Description copied from interface:ILocator
Make the receiver read only. This is a one way switch only.- Specified by:
setReadOnly
in interfaceILocator
-
synch
public void synch()
Description copied from interface:ISynchronizable
Perform a synchronization with the components physical resources.In case of a scheduled synchronization this may be called by an external daemon.
- Specified by:
synch
in interfaceISynchronizable
-
-