Package javax.servlet.jsp.jstl.tlv
Class ScriptFreeTLV
- java.lang.Object
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- javax.servlet.jsp.tagext.TagLibraryValidator
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- javax.servlet.jsp.jstl.tlv.ScriptFreeTLV
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public class ScriptFreeTLV extends javax.servlet.jsp.tagext.TagLibraryValidator
A TagLibraryValidator for enforcing restrictions against the use of JSP scripting elements.
This TLV supports four initialization parameters, for controlling which of the four types of scripting elements are allowed or prohibited:
- allowDeclarations: if true, indicates that declaration elements are not prohibited.
- allowScriptlets: if true, indicates that scriptlets are not prohibited
- allowExpressions: if true, indicates that top-level expression elements (i.e., expressions not associated with request-time attribute values) are not prohibited.
- allowRTExpressions: if true, indicates that expression elements associated with request-time attribute values are not prohibited.
The default value for all for initialization parameters is false, indicating all forms of scripting elements are to be prohibited.
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Nested Class Summary
Nested Classes Modifier and Type Class Description private class
ScriptFreeTLV.MyContentHandler
Handler for SAX events.
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Field Summary
Fields Modifier and Type Field Description private boolean
allowDeclarations
private boolean
allowExpressions
private boolean
allowRTExpressions
private boolean
allowScriptlets
private javax.xml.parsers.SAXParserFactory
factory
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Constructor Summary
Constructors Constructor Description ScriptFreeTLV()
Constructs a new validator instance.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
setInitParameters(java.util.Map<java.lang.String,java.lang.Object> initParms)
Sets the values of the initialization parameters, as supplied in the TLD.javax.servlet.jsp.tagext.ValidationMessage[]
validate(java.lang.String prefix, java.lang.String uri, javax.servlet.jsp.tagext.PageData page)
Validates a single JSP page.private static javax.servlet.jsp.tagext.ValidationMessage[]
vmFromString(java.lang.String message)
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Method Detail
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setInitParameters
public void setInitParameters(java.util.Map<java.lang.String,java.lang.Object> initParms)
Sets the values of the initialization parameters, as supplied in the TLD.- Overrides:
setInitParameters
in classjavax.servlet.jsp.tagext.TagLibraryValidator
- Parameters:
initParms
- a mapping from the names of the initialization parameters to their values, as specified in the TLD.
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validate
public javax.servlet.jsp.tagext.ValidationMessage[] validate(java.lang.String prefix, java.lang.String uri, javax.servlet.jsp.tagext.PageData page)
Validates a single JSP page.- Overrides:
validate
in classjavax.servlet.jsp.tagext.TagLibraryValidator
- Parameters:
prefix
- the namespace prefix specified by the page for the custom tag library being validated.uri
- the URI specified by the page for the TLD of the custom tag library being validated.page
- a wrapper around the XML representation of the page being validated.- Returns:
- null, if the page is valid; otherwise, a ValidationMessage[] containing one or more messages indicating why the page is not valid.
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vmFromString
private static javax.servlet.jsp.tagext.ValidationMessage[] vmFromString(java.lang.String message)
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