/*
* @(#)LinkException.java 1.8 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.naming;
/**
* This exception is used to describe problems encounter while resolving links.
* Addition information is added to the base NamingException for pinpointing
* the problem with the link.
*<p>
* Analogous to how NamingException captures name resolution information,
* LinkException captures "link"-name resolution information pinpointing
* the problem encountered while resolving a link. All these fields may
* be null.
* <ul>
* <li> Link Resolved Name. Portion of link name that has been resolved.
* <li> Link Resolved Object. Object to which resolution of link name proceeded.
* <li> Link Remaining Name. Portion of link name that has not been resolved.
* <li> Link Explanation. Detail explaining why link resolution failed.
*</ul>
*
*<p>
* A LinkException instance is not synchronized against concurrent
* multithreaded access. Multiple threads trying to access and modify
* a single LinkException instance should lock the object.
*
* @author Rosanna Lee
* @author Scott Seligman
* @version 1.8 03/12/19
*
* @see Context#lookupLink
* @see LinkRef
* @since 1.3
*/
/*<p>
* The serialized form of a LinkException object consists of the
* serialized fields of its NamingException superclass, the link resolved
* name (a Name object), the link resolved object, link remaining name
* (a Name object), and the link explanation String.
*/
public class LinkException extends NamingException {
/**
* Contains the part of the link that has been successfully resolved.
* It is a composite name and can be null.
* This field is initialized by the constructors.
* You should access and manipulate this field
* through its get and set methods.
* @serial
* @see #getLinkResolvedName
* @see #setLinkResolvedName
*/
protected Name linkResolvedName;
/**
* Contains the object to which resolution of the part of the link was successful.
* Can be null. This field is initialized by the constructors.
* You should access and manipulate this field
* through its get and set methods.
* @serial
* @see #getLinkResolvedObj
* @see #setLinkResolvedObj
*/
protected Object linkResolvedObj;
/**
* Contains the remaining link name that has not been resolved yet.
* It is a composite name and can be null.
* This field is initialized by the constructors.
* You should access and manipulate this field
* through its get and set methods.
* @serial
* @see #getLinkRemainingName
* @see #setLinkRemainingName
*/
protected Name linkRemainingName;
/**
* Contains the exception of why resolution of the link failed.
* Can be null. This field is initialized by the constructors.
* You should access and manipulate this field
* through its get and set methods.
* @serial
* @see #getLinkExplanation
* @see #setLinkExplanation
*/
protected String linkExplanation;
/**
* Constructs a new instance of LinkException with an explanation
* All the other fields are initialized to null.
* @param explanation A possibly null string containing additional
* detail about this exception.
* @see java.lang.Throwable#getMessage
*/
public LinkException(String explanation) {
super(explanation);
linkResolvedName = null;
linkResolvedObj = null;
linkRemainingName = null;
linkExplanation = null;
}
/**
* Constructs a new instance of LinkException.
* All the non-link-related and link-related fields are initialized to null.
*/
public LinkException() {
super();
linkResolvedName = null;
linkResolvedObj = null;
linkRemainingName = null;
linkExplanation = null;
}
/**
* Retrieves the leading portion of the link name that was resolved
* successfully.
*
* @return The part of the link name that was resolved successfully.
* It is a composite name. It can be null, which means
* the link resolved name field has not been set.
* @see #getLinkResolvedObj
* @see #setLinkResolvedName
*/
public Name getLinkResolvedName() {
return this.linkResolvedName;
}
/**
* Retrieves the remaining unresolved portion of the link name.
* @return The part of the link name that has not been resolved.
* It is a composite name. It can be null, which means
* the link remaining name field has not been set.
* @see #setLinkRemainingName
*/
public Name getLinkRemainingName() {
return this.linkRemainingName;
}
/**
* Retrieves the object to which resolution was successful.
* This is the object to which the resolved link name is bound.
*
* @return The possibly null object that was resolved so far.
* If null, it means the link resolved object field has not been set.
* @see #getLinkResolvedName
* @see #setLinkResolvedObj
*/
public Object getLinkResolvedObj() {
return this.linkResolvedObj;
}
/**
* Retrieves the explanation associated with the problem encounter
* when resolving a link.
*
* @return The possibly null detail string explaining more about the problem
* with resolving a link.
* If null, it means there is no
* link detail message for this exception.
* @see #setLinkExplanation
*/
public String getLinkExplanation() {
return this.linkExplanation;
}
/**
* Sets the explanation associated with the problem encounter
* when resolving a link.
*
* @param msg The possibly null detail string explaining more about the problem
* with resolving a link. If null, it means no detail will be recorded.
* @see #getLinkExplanation
*/
public void setLinkExplanation(String msg) {
this.linkExplanation = msg;
}
/**
* Sets the resolved link name field of this exception.
*<p>
* <tt>name</tt> is a composite name. If the intent is to set
* this field using a compound name or string, you must
* "stringify" the compound name, and create a composite
* name with a single component using the string. You can then
* invoke this method using the resulting composite name.
*<p>
* A copy of <code>name</code> is made and stored.
* Subsequent changes to <code>name</code> does not
* affect the copy in this NamingException and vice versa.
*
*
* @param name The name to set resolved link name to. This can be null.
* If null, it sets the link resolved name field to null.
* @see #getLinkResolvedName
*/
public void setLinkResolvedName(Name name) {
if (name != null) {
this.linkResolvedName = (Name)(name.clone());
} else {
this.linkResolvedName = null;
}
}
/**
* Sets the remaining link name field of this exception.
*<p>
* <tt>name</tt> is a composite name. If the intent is to set
* this field using a compound name or string, you must
* "stringify" the compound name, and create a composite
* name with a single component using the string. You can then
* invoke this method using the resulting composite name.
*<p>
* A copy of <code>name</code> is made and stored.
* Subsequent changes to <code>name</code> does not
* affect the copy in this NamingException and vice versa.
*
* @param name The name to set remaining link name to. This can be null.
* If null, it sets the remaining name field to null.
* @see #getLinkRemainingName
*/
public void setLinkRemainingName(Name name) {
if (name != null)
this.linkRemainingName = (Name)(name.clone());
else
this.linkRemainingName = null;
}
/**
* Sets the link resolved object field of this exception.
* This indicates the last successfully resolved object of link name.
* @param obj The object to set link resolved object to. This can be null.
* If null, the link resolved object field is set to null.
* @see #getLinkResolvedObj
*/
public void setLinkResolvedObj(Object obj) {
this.linkResolvedObj = obj;
}
/**
* Generates the string representation of this exception.
* This string consists of the NamingException information plus
* the link's remaining name.
* This string is used for debugging and not meant to be interpreted
* programmatically.
* @return The non-null string representation of this link exception.
*/
public String toString() {
return super.toString() + "; Link Remaining Name: '" +
this.linkRemainingName + "'";
}
/**
* Generates the string representation of this exception.
* This string consists of the NamingException information plus
* the additional information of resolving the link.
* If 'detail' is true, the string also contains information on
* the link resolved object. If false, this method is the same
* as the form of toString() that accepts no parameters.
* This string is used for debugging and not meant to be interpreted
* programmatically.
*
* @param detail If true, add information about the link resolved
* object.
* @return The non-null string representation of this link exception.
*/
public String toString(boolean detail) {
if (!detail || this.linkResolvedObj == null)
return this.toString();
return this.toString() + "; Link Resolved Object: " +
this.linkResolvedObj;
}
/**
* Use serialVersionUID from JNDI 1.1.1 for interoperability
*/
private static final long serialVersionUID = -7967662604076777712L;
};
|
