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java.lang.Objectorg.eclipse.core.expressions.ExpressionConverter
public final class ExpressionConverter
An expression converter converts an XML expression represented by an
IConfigurationElement
or Element
(DOM) subtree into a
corresponding expression tree.
An expression converter manages a list of ElementHandler
s. Element
handlers are responsible to do the actual conversion. The element handlers
build a chain of responsibility.
Constructor Summary | |
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ExpressionConverter(ElementHandler[] handlers)
Creates a new expression converter with the given list of element handlers. |
Method Summary | |
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static ExpressionConverter |
getDefault()
Returns the default expression converter. |
Expression |
perform(Element root)
Converts the tree of DOM elements represented by the given root element and returns a corresponding expression tree. |
Expression |
perform(IConfigurationElement root)
Converts the tree of configuration elements represented by the given root element and returns a corresponding expression tree. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public ExpressionConverter(ElementHandler[] handlers)
handlers
- the array of element handlersMethod Detail |
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public static ExpressionConverter getDefault()
public Expression perform(IConfigurationElement root) throws CoreException
root
- the configuration element to be converted
null
if the configuration element cannot be converted
CoreException
- if the configuration element can't be
converted. Reasons include: (a) no handler is available to
cope with a certain configuration element or (b) the XML
expression tree is malformed.public Expression perform(Element root) throws CoreException
root
- the element to be converted
null
if the element cannot be converted
CoreException
- if the element can't be converted.
Reasons include: (a) no handler is available to cope with
a certain element or (b) the XML expression tree is malformed.
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