public class TldLocationsCache extends Object
A container for all tag libraries that are defined "globally" for the web application.
Tag Libraries can be defined globally in one of two ways:
A mapping between the taglib URI and its associated TaglibraryInfoImpl is maintained in this container. Actually, that's what we'd like to do. However, because of the way the classes TagLibraryInfo and TagInfo have been defined, it is not currently possible to share an instance of TagLibraryInfo across page invocations. A bug has been submitted to the spec lead. In the mean time, all we do is save the 'location' where the TLD associated with a taglib URI can be found.
When a JSP page has a taglib directive, the mappings in this container are first searched (see method getLocation()). If a mapping is found, then the location of the TLD is returned. If no mapping is found, then the uri specified in the taglib directive is to be interpreted as the location for the TLD of this tag library.
Modifier and Type | Field and Description |
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static int |
ABS_URI
The types of URI one may specify for a tag library
|
static int |
NOROOT_REL_URI |
static int |
ROOT_REL_URI |
Constructor and Description |
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TldLocationsCache(javax.servlet.ServletContext ctxt) |
TldLocationsCache(javax.servlet.ServletContext ctxt,
boolean redeployMode)
Constructor.
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Modifier and Type | Method and Description |
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Set<String> |
getAbsolutePathsOfLocations() |
String[] |
getLocation(String uri)
Gets the 'location' of the TLD associated with the given taglib 'uri'.
|
static void |
setNoTldJars(String jarNames)
Sets the list of JARs that are known not to contain any TLDs.
|
static int |
uriType(String uri) |
public static final int ABS_URI
public static final int ROOT_REL_URI
public static final int NOROOT_REL_URI
public TldLocationsCache(javax.servlet.ServletContext ctxt)
public TldLocationsCache(javax.servlet.ServletContext ctxt, boolean redeployMode)
ctxt
- the servlet context of the web application in which Jasper
is runningredeployMode
- if true, then the compiler will allow redeploying
a tag library from the same jar, at the expense of slowing down the
server a bit. Note that this may only work on JDK 1.3.1_01a and later,
because of JDK bug 4211817 fixed in this release.
If redeployMode is false, a faster but less capable mode will be used.public static void setNoTldJars(String jarNames)
jarNames
- List of comma-separated names of JAR files that are
known not to contain any TLDspublic String[] getLocation(String uri) throws JasperException
uri
- The taglib uriJasperException
- in case of Jasper errorspublic static int uriType(String uri)
uri
- the URICopyright © 2000–2020 Apache Software Foundation. All rights reserved.