org.apache.jasper
Class JspCompilationContext

java.lang.Object
  org.apache.jasper.JspCompilationContext

public class JspCompilationContext
extends java.lang.Object

A place holder for various things that are used through out the JSP engine. This is a per-request/per-context data structure. Some of the instance variables are set at different points. Most of the path-related stuff is here - mangling names, versions, dirs, loading resources and dealing with uris.

Author:

Anil K. Vijendran, Harish Prabandham, Pierre Delisle, Costin Manolache, Kin-man Chung

log

protected Log log

tagFileJarUrls

protected java.util.Map<java.lang.String,java.net.URL> tagFileJarUrls

isPackagedTagFile

protected boolean isPackagedTagFile

className

protected java.lang.String className

jspUri

protected java.lang.String jspUri

isErrPage

protected boolean isErrPage

basePackageName

protected java.lang.String basePackageName

derivedPackageName

protected java.lang.String derivedPackageName

servletJavaFileName

protected java.lang.String servletJavaFileName

javaPath

protected java.lang.String javaPath

classFileName

protected java.lang.String classFileName

contentType

protected java.lang.String contentType

writer

protected ServletWriter writer

options

protected Options options

jsw

protected JspServletWrapper jsw

jspCompiler

protected Compiler jspCompiler

classPath

protected java.lang.String classPath

baseURI

protected java.lang.String baseURI

outputDir

protected java.lang.String outputDir

context

protected javax.servlet.ServletContext context

loader

protected java.net.URLClassLoader loader

rctxt

protected JspRuntimeContext rctxt

removed

protected volatile int removed

jspLoader

protected java.net.URLClassLoader jspLoader

baseUrl

protected java.net.URL baseUrl

servletClass

protected java.lang.Class servletClass

isTagFile

protected boolean isTagFile

protoTypeMode

protected boolean protoTypeMode

tagInfo

protected javax.servlet.jsp.tagext.TagInfo tagInfo

tagFileJarUrl

protected java.net.URL tagFileJarUrl

JspCompilationContext

public JspCompilationContext(java.lang.String jspUri,
                             boolean isErrPage,
                             Options options,
                             javax.servlet.ServletContext context,
                             JspServletWrapper jsw,
                             JspRuntimeContext rctxt)

JspCompilationContext

public JspCompilationContext(java.lang.String tagfile,
                             javax.servlet.jsp.tagext.TagInfo tagInfo,
                             Options options,
                             javax.servlet.ServletContext context,
                             JspServletWrapper jsw,
                             JspRuntimeContext rctxt,
                             java.net.URL tagFileJarUrl)

getClassPath

public java.lang.String getClassPath()

The classpath that is passed off to the Java compiler.

setClassPath

public void setClassPath(java.lang.String classPath)

The classpath that is passed off to the Java compiler.

getClassLoader

public java.lang.ClassLoader getClassLoader()

What class loader to use for loading classes while compiling this JSP?

setClassLoader

public void setClassLoader(java.net.URLClassLoader loader)

getJspLoader

public java.lang.ClassLoader getJspLoader()

getOutputDir

public java.lang.String getOutputDir()

The output directory to generate code into. The output directory is make up of the scratch directory, which is provide in Options, plus the directory derived from the package name.

createCompiler

public Compiler createCompiler()
                        throws JasperException

Create a "Compiler" object based on some init param data. This is not done yet. Right now we're just hardcoding the actual compilers that are created.

Throws:

JasperException

createCompiler

protected Compiler createCompiler(java.lang.String className)

getCompiler

public Compiler getCompiler()

resolveRelativeUri

public java.lang.String resolveRelativeUri(java.lang.String uri)

Get the full value of a URI relative to this compilations context uses current file as the base.

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String res)

Gets a resource as a stream, relative to the meanings of this context's implementation.

Returns:

a null if the resource cannot be found or represented as an InputStream.

getResource

public java.net.URL getResource(java.lang.String res)
                         throws java.net.MalformedURLException

Throws:

java.net.MalformedURLException

getResourcePaths

public java.util.Set getResourcePaths(java.lang.String path)

getRealPath

public java.lang.String getRealPath(java.lang.String path)

Gets the actual path of a URI relative to the context of the compilation.

getTagFileJarUrl

public java.net.URL getTagFileJarUrl(java.lang.String tagFile)

Returns the tag-file-name-to-JAR-file map of this compilation unit, which maps tag file names to the JAR files in which the tag files are packaged. The map is populated when parsing the tag-file elements of the TLDs of any imported taglibs.

setTagFileJarUrl

public void setTagFileJarUrl(java.lang.String tagFile,
                             java.net.URL tagFileURL)

getTagFileJarUrl

public java.net.URL getTagFileJarUrl()

Returns the JAR file in which the tag file for which this JspCompilationContext was created is packaged, or null if this JspCompilationContext does not correspond to a tag file, or if the corresponding tag file is not packaged in a JAR.

getServletClassName

public java.lang.String getServletClassName()

Just the class name (does not include package name) of the generated class.

setServletClassName

public void setServletClassName(java.lang.String className)

getJspFile

public java.lang.String getJspFile()

Path of the JSP URI. Note that this is not a file name. This is the context rooted URI of the JSP file.

isErrorPage

public boolean isErrorPage()

Are we processing something that has been declared as an errorpage?

setErrorPage

public void setErrorPage(boolean isErrPage)

isTagFile

public boolean isTagFile()

getTagInfo

public javax.servlet.jsp.tagext.TagInfo getTagInfo()

setTagInfo

public void setTagInfo(javax.servlet.jsp.tagext.TagInfo tagi)

isPrototypeMode

public boolean isPrototypeMode()

True if we are compiling a tag file in prototype mode. ie we only generate codes with class for the tag handler with empty method bodies.

setPrototypeMode

public void setPrototypeMode(boolean pm)

getServletPackageName

public java.lang.String getServletPackageName()

Package name for the generated class is make up of the base package name, which is user settable, and the derived package name. The derived package name directly mirrors the file heirachy of the JSP page.

getDerivedPackageName

protected java.lang.String getDerivedPackageName()

setServletPackageName

public void setServletPackageName(java.lang.String servletPackageName)

The package name into which the servlet class is generated.

getServletJavaFileName

public java.lang.String getServletJavaFileName()

Full path name of the Java file into which the servlet is being generated.

getOptions

public Options getOptions()

Get hold of the Options object for this context.

getServletContext

public javax.servlet.ServletContext getServletContext()

getRuntimeContext

public JspRuntimeContext getRuntimeContext()

getJavaPath

public java.lang.String getJavaPath()

Path of the Java file relative to the work directory.

getClassFileName

public java.lang.String getClassFileName()

getContentType

public java.lang.String getContentType()

Get the content type of this JSP. Content type includes content type and encoding.

setContentType

public void setContentType(java.lang.String contentType)

getWriter

public ServletWriter getWriter()

Where is the servlet being generated?

setWriter

public void setWriter(ServletWriter writer)

getTldLocation

public java.lang.String[] getTldLocation(java.lang.String uri)
                                  throws JasperException

Gets the 'location' of the TLD associated with the given taglib 'uri'.

Returns:

An array of two Strings: The first element denotes the real path to the TLD. If the path to the TLD points to a jar file, then the second element denotes the name of the TLD entry in the jar file. Returns null if the given uri is not associated with any tag library 'exposed' in the web application.

Throws:

JasperException

keepGenerated

public boolean keepGenerated()

Are we keeping generated code around?

incrementRemoved

public void incrementRemoved()

isRemoved

public boolean isRemoved()

compile

public void compile()
             throws JasperException,
                    java.io.FileNotFoundException

Throws:

JasperException

java.io.FileNotFoundException

load

public java.lang.Class load()
                     throws JasperException,
                            java.io.FileNotFoundException

Throws:

JasperException

java.io.FileNotFoundException

checkOutputDir

public void checkOutputDir()

makeOutputDir

protected boolean makeOutputDir()

createOutputDir

protected void createOutputDir()

isPathSeparator

protected static final boolean isPathSeparator(char c)

canonicalURI

protected static final java.lang.String canonicalURI(java.lang.String s)