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edu.emory.mathcs.util.classloader
Class ResourceHandle
java.lang.Objectedu.emory.mathcs.util.classloader.ResourceHandle
- Direct Known Subclasses:
- ResourceLoader.JarResourceHandle
- public abstract class ResourceHandle
- extends java.lang.Object
This class represents a handle (a connection) to some resource, which may
be a class, native library, text file, image, etc. Handles are returned
by ResourceLoader's get methods.
Having the resource handle, in addition to accessing the resource data
(using methods getInputStream() 55 or getBytes() 55 ) as well as
access resource metadata, such as attributes, certificates, etc.
As soon as the handle is no longer in use, it should be explicitly
close() 55 d, similarly to I/O streams.
- Version:
- 1.0
| Constructor Summary | |
ResourceHandle()
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| Method Summary | |
void |
close()
Closes a connection to the resource indentified by this handle. |
java.util.jar.Attributes |
getAttributes()
Return the Attributes of the resource, or null if none. |
byte[] |
getBytes()
Returns this resource data as an array of bytes. |
java.security.cert.Certificate[] |
getCertificates()
Return the Certificates of the resource, or null if none. |
abstract java.net.URL |
getCodeSourceURL()
Returns the CodeSource URL for the class or resource. |
abstract int |
getContentLength()
Returns the length of this resource data, or -1 if unknown. |
abstract java.io.InputStream |
getInputStream()
Returns and InputStream for reading this resource data. |
java.util.jar.Manifest |
getManifest()
Returns the Manifest of the JAR file from which this resource was loaded, or null if none. |
abstract java.lang.String |
getName()
Return the name of the resource. |
abstract java.net.URL |
getURL()
Returns the URL of the resource. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
ResourceHandle
public ResourceHandle()
| Method Detail |
getName
public abstract java.lang.String getName()
- Return the name of the resource. The name is a "/"-separated path
name that identifies the resource.
getURL
public abstract java.net.URL getURL()
- Returns the URL of the resource.
getCodeSourceURL
public abstract java.net.URL getCodeSourceURL()
- Returns the CodeSource URL for the class or resource.
getInputStream
public abstract java.io.InputStream getInputStream() throws java.io.IOException
- Returns and InputStream for reading this resource data.
getContentLength
public abstract int getContentLength()
throws java.io.IOException
- Returns the length of this resource data, or -1 if unknown.
getBytes
public byte[] getBytes()
throws java.io.IOException
- Returns this resource data as an array of bytes.
getManifest
public java.util.jar.Manifest getManifest() throws java.io.IOException
- Returns the Manifest of the JAR file from which this resource
was loaded, or null if none.
getCertificates
public java.security.cert.Certificate[] getCertificates()
- Return the Certificates of the resource, or null if none.
getAttributes
public java.util.jar.Attributes getAttributes() throws java.io.IOException
- Return the Attributes of the resource, or null if none.
close
public void close()
- Closes a connection to the resource indentified by this handle. Releases
any I/O objects associated with the handle.
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||