JspCompilationContext (Apache Tomcat 7.0.109 API Documentation)

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

```
public class JspCompilationContext
extends 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

Field Summary

Fields
Modifier and Type	Field and Description
`protected String`	`basePackageName`
`protected String`	`baseURI`
`protected URL`	`baseUrl`
`protected String`	`classFileName`
`protected String`	`className`
`protected String`	`classPath`
`protected ServletContext`	`context`
`protected String`	`derivedPackageName`
`protected boolean`	`isTagFile`
`protected String`	`javaPath`
`protected Compiler`	`jspCompiler`
`protected URLClassLoader`	`jspLoader`
`protected String`	`jspUri`
`protected JspServletWrapper`	`jsw`
`protected ClassLoader`	`loader`
`protected Options`	`options`
`protected String`	`outputDir`
`protected boolean`	`protoTypeMode`
`protected JspRuntimeContext`	`rctxt`
`protected boolean`	`removed`
`protected Class<?>`	`servletClass`
`protected String`	`servletJavaFileName`
`protected Map<String,JarResource>`	`tagFileJarUrls`
`protected TagInfo`	`tagInfo`
`protected JarResource`	`tagJarResource`
`protected ServletWriter`	`writer`

Constructor Summary

Constructors
Constructor and Description
`JspCompilationContext(String jspUri, Options options, ServletContext context, JspServletWrapper jsw, JspRuntimeContext rctxt)`
`JspCompilationContext(String tagfile, TagInfo tagInfo, Options options, ServletContext context, JspServletWrapper jsw, JspRuntimeContext rctxt, JarResource tagJarResource)`

Method Summary

Methods
Modifier and Type	Method and Description
`protected static String`	`canonicalURI(String s)`
`void`	`checkOutputDir()`
`void`	`clearJspLoader()`
`void`	`compile()`
`Compiler`	`createCompiler()` Create a "Compiler" object based on some init param data.
`protected Compiler`	`createCompiler(String className)`
`protected void`	`createOutputDir()`
`String`	`getClassFileName()`
`ClassLoader`	`getClassLoader()` What class loader to use for loading classes while compiling this JSP?
`String`	`getClassPath()` The classpath that is passed off to the Java compiler.
`Compiler`	`getCompiler()`
`protected String`	`getDerivedPackageName()`
`String`	`getFQCN()`
`String`	`getJavaPath()` Path of the Java file relative to the work directory.
`String`	`getJspFile()` Path of the JSP URI.
`long`	`getJspLastModified()` Deprecated. Will be removed in Tomcat 8.0.x. Use `getLastModified(String)` instead.
`ClassLoader`	`getJspLoader()`
`Long`	`getLastModified(String resource)`
`Options`	`getOptions()` Get hold of the Options object for this context.
`String`	`getOutputDir()` The output directory to generate code into.
`String`	`getRealPath(String path)` Gets the actual path of a URI relative to the context of the compilation.
`URL`	`getResource(String res)`
`InputStream`	`getResourceAsStream(String res)` Gets a resource as a stream, relative to the meanings of this context's implementation.
`Set<String>`	`getResourcePaths(String path)`
`JspRuntimeContext`	`getRuntimeContext()`
`String`	`getServletClassName()` Just the class name (does not include package name) of the generated class.
`ServletContext`	`getServletContext()`
`String`	`getServletJavaFileName()` Full path name of the Java file into which the servlet is being generated.
`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.
`JarResource`	`getTagFileJarResource()` 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.
`JarResource`	`getTagFileJarResource(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.
`TagInfo`	`getTagInfo()`
`TldLocation`	`getTldLocation(String uri)` Gets the 'location' of the TLD associated with the given taglib 'uri'.
`ServletWriter`	`getWriter()` Where is the servlet being generated?
`void`	`incrementRemoved()`
`protected static boolean`	`isPathSeparator(char c)`
`boolean`	`isPrototypeMode()` True if we are compiling a tag file in prototype mode.
`boolean`	`isRemoved()`
`boolean`	`isTagFile()`
`boolean`	`keepGenerated()` Are we keeping generated code around?
`Class<?>`	`load()`
`protected boolean`	`makeOutputDir()`
`String`	`resolveRelativeUri(String uri)` Get the full value of a URI relative to this compilations context uses current file as the base.
`void`	`setClassLoader(ClassLoader loader)`
`void`	`setClassPath(String classPath)` The classpath that is passed off to the Java compiler.
`void`	`setPrototypeMode(boolean pm)`
`void`	`setServletClassName(String className)`
`void`	`setServletPackageName(String servletPackageName)` The package name into which the servlet class is generated.
`void`	`setTagFileJarResource(String tagFile, JarResource jarResource)`
`void`	`setTagInfo(TagInfo tagi)`
`void`	`setWriter(ServletWriter writer)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

tagFileJarUrls

protected Map<String,JarResource> tagFileJarUrls

className
```
protected String className
```

jspUri
```
protected String jspUri
```

basePackageName
```
protected String basePackageName
```

derivedPackageName
```
protected String derivedPackageName
```

servletJavaFileName
```
protected String servletJavaFileName
```

javaPath
```
protected String javaPath
```

classFileName
```
protected String classFileName
```

writer
```
protected ServletWriter writer
```

options
```
protected Options options
```

jsw
```
protected JspServletWrapper jsw
```

jspCompiler
```
protected Compiler jspCompiler
```

classPath
```
protected String classPath
```

baseURI
```
protected String baseURI
```

outputDir
```
protected String outputDir
```

context
```
protected ServletContext context
```

loader
```
protected ClassLoader loader
```

rctxt
```
protected JspRuntimeContext rctxt
```

removed
```
protected volatile boolean removed
```

jspLoader

protected volatile URLClassLoader jspLoader

baseUrl
```
protected URL baseUrl
```

servletClass
```
protected Class<?> servletClass
```

isTagFile
```
protected boolean isTagFile
```

protoTypeMode
```
protected boolean protoTypeMode
```

tagInfo
```
protected TagInfo tagInfo
```

tagJarResource
```
protected JarResource tagJarResource
```

Constructor Detail

JspCompilationContext

public JspCompilationContext(String jspUri,
                     Options options,
                     ServletContext context,
                     JspServletWrapper jsw,
                     JspRuntimeContext rctxt)

JspCompilationContext

public JspCompilationContext(String tagfile,
                     TagInfo tagInfo,
                     Options options,
                     ServletContext context,
                     JspServletWrapper jsw,
                     JspRuntimeContext rctxt,
                     JarResource tagJarResource)

Method Detail
- getClassPath
```
public String getClassPath()
```
  The classpath that is passed off to the Java compiler.
- setClassPath
```
public void setClassPath(String classPath)
```
  The classpath that is passed off to the Java compiler.
- getClassLoader
```
public ClassLoader getClassLoader()
```
  What class loader to use for loading classes while compiling this JSP?
- setClassLoader
```
public void setClassLoader(ClassLoader loader)
```
- getJspLoader
```
public ClassLoader getJspLoader()
```
- clearJspLoader
```
public void clearJspLoader()
```
- getOutputDir
```
public 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()
```
  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.
- createCompiler
```
protected Compiler createCompiler(String className)
```
- getCompiler
```
public Compiler getCompiler()
```
- resolveRelativeUri
```
public String resolveRelativeUri(String uri)
```
  Get the full value of a URI relative to this compilations context uses current file as the base.
- getResourceAsStream
```
public InputStream getResourceAsStream(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 URL getResource(String res)
                throws MalformedURLException
```
  Throws:
  
  MalformedURLException
- getResourcePaths
```
public Set<String> getResourcePaths(String path)
```
- getRealPath
```
public String getRealPath(String path)
```
  Gets the actual path of a URI relative to the context of the compilation.
- getTagFileJarResource
```
public JarResource getTagFileJarResource(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.
- setTagFileJarResource
```
public void setTagFileJarResource(String tagFile,
                         JarResource jarResource)
```
- getTagFileJarResource
```
public JarResource getTagFileJarResource()
```
  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 String getServletClassName()
```
  Just the class name (does not include package name) of the generated class.
- setServletClassName
```
public void setServletClassName(String className)
```
- getJspFile
```
public 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.
- getJspLastModified
```
@Deprecated
public long getJspLastModified()
```
  Deprecated. Will be removed in Tomcat 8.0.x. Use getLastModified(String) instead.
- getLastModified
```
public Long getLastModified(String resource)
```
- isTagFile
```
public boolean isTagFile()
```
- getTagInfo
```
public TagInfo getTagInfo()
```
- setTagInfo
```
public void setTagInfo(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 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 hierarchy of the JSP page.
- getDerivedPackageName
```
protected String getDerivedPackageName()
```
- setServletPackageName
```
public void setServletPackageName(String servletPackageName)
```
  The package name into which the servlet class is generated.
- getServletJavaFileName
```
public 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 ServletContext getServletContext()
```
- getRuntimeContext
```
public JspRuntimeContext getRuntimeContext()
```
- getJavaPath
```
public String getJavaPath()
```
  Path of the Java file relative to the work directory.
- getClassFileName
```
public String getClassFileName()
```
- getWriter
```
public ServletWriter getWriter()
```
  Where is the servlet being generated?
- setWriter
```
public void setWriter(ServletWriter writer)
```
- getTldLocation
```
public TldLocation getTldLocation(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,
                    FileNotFoundException
```
  Throws:
  
  JasperException
  
  FileNotFoundException
- load
```
public Class<?> load()
              throws JasperException
```
  Throws:
  
  JasperException
- getFQCN
```
public String getFQCN()
```
- checkOutputDir
```
public void checkOutputDir()
```
- makeOutputDir
```
protected boolean makeOutputDir()
```
- createOutputDir
```
protected void createOutputDir()
```
- isPathSeparator
```
protected static final boolean isPathSeparator(char c)
```
- canonicalURI
```
protected static final String canonicalURI(String s)
```

Class JspCompilationContext

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

tagFileJarUrls

className

jspUri

basePackageName

derivedPackageName

servletJavaFileName

javaPath

classFileName

writer

options

jsw

jspCompiler

classPath

baseURI

outputDir

context

loader

rctxt

removed

jspLoader

baseUrl

servletClass

isTagFile

protoTypeMode

tagInfo

tagJarResource

Constructor Detail

JspCompilationContext

JspCompilationContext

Method Detail

getClassPath

setClassPath

getClassLoader

setClassLoader

getJspLoader

clearJspLoader

getOutputDir

createCompiler

createCompiler

getCompiler

resolveRelativeUri

getResourceAsStream

getResource

getResourcePaths

getRealPath

getTagFileJarResource

setTagFileJarResource

getTagFileJarResource

getServletClassName

setServletClassName

getJspFile

getJspLastModified

getLastModified

isTagFile

getTagInfo

setTagInfo

isPrototypeMode

setPrototypeMode

getServletPackageName

getDerivedPackageName

setServletPackageName

getServletJavaFileName

getOptions

getServletContext

getRuntimeContext

getJavaPath

getClassFileName

getWriter

setWriter

getTldLocation

keepGenerated

incrementRemoved

isRemoved

compile