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java.lang.Objectjavax.servlet.jsp.tagext.TagSupport
javax.servlet.jsp.tagext.BodyTagSupport
org.apache.taglibs.standard.tag.common.core.ImportSupport
public abstract class ImportSupport
Support for tag handlers for <import>, the general-purpose text-importing mechanism for JSTL 1.0. The rtexprvalue and expression- evaluating libraries each have handlers that extend this class.
Field Summary | |
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protected String |
charEncoding
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protected String |
context
|
static String |
DEFAULT_ENCODING
Default character encoding for response. |
protected String |
url
|
static String |
VALID_SCHEME_CHARS
Valid characters in a scheme. |
Fields inherited from class javax.servlet.jsp.tagext.BodyTagSupport |
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bodyContent |
Fields inherited from class javax.servlet.jsp.tagext.TagSupport |
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id, pageContext |
Fields inherited from interface javax.servlet.jsp.tagext.BodyTag |
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EVAL_BODY_BUFFERED, EVAL_BODY_TAG |
Fields inherited from interface javax.servlet.jsp.tagext.IterationTag |
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EVAL_BODY_AGAIN |
Fields inherited from interface javax.servlet.jsp.tagext.Tag |
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EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE |
Constructor Summary | |
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ImportSupport()
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Method Summary | |
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void |
addParameter(String name,
String value)
Adds a parameter to this tag's URL. |
void |
doCatch(Throwable t)
Invoked if a Throwable occurs while evaluating the BODY inside a tag or in any of the following methods: Tag.doStartTag(), Tag.doEndTag(), IterationTag.doAfterBody() and BodyTag.doInitBody(). |
int |
doEndTag()
Default processing of the end tag returning EVAL_PAGE. |
void |
doFinally()
Invoked in all cases after doEndTag() for any class implementing Tag, IterationTag or BodyTag. |
int |
doStartTag()
Default processing of the start tag returning EVAL_BODY_BUFFERED. |
static boolean |
isAbsoluteUrl(String url)
Returns true if our current URL is absolute, false otherwise. |
void |
release()
Release state. |
void |
setScope(String scope)
|
void |
setVar(String var)
|
void |
setVarReader(String varReader)
|
static String |
stripSession(String url)
Strips a servlet session ID from url. |
Methods inherited from class javax.servlet.jsp.tagext.BodyTagSupport |
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doAfterBody, doInitBody, getBodyContent, getPreviousOut, setBodyContent |
Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
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findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface javax.servlet.jsp.tagext.Tag |
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getParent, setPageContext, setParent |
Field Detail |
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public static final String VALID_SCHEME_CHARS
Valid characters in a scheme.
RFC 1738 says the following:
Scheme names consist of a sequence of characters. The lower case letters "a"--"z", digits, and the characters plus ("+"), period ("."), and hyphen ("-") are allowed. For resiliency, programs interpreting URLs should treat upper case letters as equivalent to lower case in scheme names (e.g., allow "HTTP" as well as "http").
We treat as absolute any URL that begins with such a scheme name, followed by a colon.
public static final String DEFAULT_ENCODING
protected String url
protected String context
protected String charEncoding
Constructor Detail |
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public ImportSupport()
Method Detail |
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public int doStartTag() throws JspException
BodyTagSupport
doStartTag
in interface Tag
doStartTag
in class BodyTagSupport
JspException
- if an error occurred while processing this tagTag.doStartTag()
public int doEndTag() throws JspException
BodyTagSupport
doEndTag
in interface Tag
doEndTag
in class BodyTagSupport
JspException
- if an error occurred while processing this tagTag.doEndTag()
public void doCatch(Throwable t) throws Throwable
TryCatchFinally
This method is not invoked if the Throwable occurs during one of the setter methods.
This method may throw an exception (the same or a new one) that will be propagated further up the nest chain. If an exception is thrown, doFinally() will be invoked.
This method is intended to be used to respond to an exceptional condition.
doCatch
in interface TryCatchFinally
t
- The throwable exception navigating through this tag.
Throwable
- if the exception is to be rethrown further up
the nest chain.public void doFinally()
TryCatchFinally
This method is not invoked if the Throwable occurs during one of the setter methods.
This method should not throw an Exception.
This method is intended to maintain per-invocation data integrity and resource management actions.
doFinally
in interface TryCatchFinally
public void release()
BodyTagSupport
release
in interface Tag
release
in class BodyTagSupport
Tag.release()
public void setVar(String var)
public void setVarReader(String varReader)
public void setScope(String scope)
public void addParameter(String name, String value)
ParamParent
addParameter
in interface ParamParent
ParamSupport
public static boolean isAbsoluteUrl(String url)
public static String stripSession(String url)
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