org.apache.xml.utils
Class SerializableLocatorImpl
java.lang.Object
org.apache.xml.utils.SerializableLocatorImpl
- Locator, java.io.Serializable
public class SerializableLocatorImpl
extends java.lang.Object
implements Locator, java.io.Serializable
The standard SAX implementation of LocatorImpl is not serializable,
limiting its utility as "a persistent snapshot of a locator".
This is a quick hack to make it so. Note that it makes more sense
in many cases to set up fields to hold this data rather than pointing
at another object... but that decision should be made on architectural
grounds rather than serializability.
It isn't clear whether subclassing LocatorImpl and adding serialization
methods makes more sense than copying it and just adding Serializable
to its interface. Since it's so simple, I've taken the latter approach
for now.
Version:
- Joe Kesselman
- XalanJ2
LocatorImpl
, Locator
, Serialized Form
int | getColumnNumber() - Return the saved column number (1-based).
|
int | getLineNumber() - Return the saved line number (1-based).
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String | getPublicId() - Return the saved public identifier.
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String | getSystemId() - Return the saved system identifier.
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void | setColumnNumber(int columnNumber) - Set the column number for this locator (1-based).
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void | setLineNumber(int lineNumber) - Set the line number for this locator (1-based).
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void | setPublicId(String publicId) - Set the public identifier for this locator.
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void | setSystemId(String systemId) - Set the system identifier for this locator.
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SerializableLocatorImpl
public SerializableLocatorImpl()
Zero-argument constructor.
SAX says "This will not normally be useful, since the main purpose
of this class is to make a snapshot of an existing Locator." In fact,
it _is_ sometimes useful when you want to construct a new Locator
pointing to a specific location... which, after all, is why the
setter methods are provided.
SerializableLocatorImpl
public SerializableLocatorImpl(Locator locator)
Copy constructor.
Create a persistent copy of the current state of a locator.
When the original locator changes, this copy will still keep
the original values (and it can be used outside the scope of
DocumentHandler methods).
locator
- The locator to copy.
setColumnNumber
public void setColumnNumber(int columnNumber)
Set the column number for this locator (1-based).
columnNumber
- The column number, or -1 if none is available.
getColumnNumber()
setLineNumber
public void setLineNumber(int lineNumber)
Set the line number for this locator (1-based).
lineNumber
- The line number, or -1 if none is available.
getLineNumber()
setPublicId
public void setPublicId(String publicId)
Set the public identifier for this locator.
publicId
- The new public identifier, or null
if none is available.
getPublicId()
setSystemId
public void setSystemId(String systemId)
Set the system identifier for this locator.
systemId
- The new system identifier, or null
if none is available.
getSystemId()
Copyright B) 2004 Apache XML Project. All Rights Reserved.