Package org.apache.tools.ant.filters
Class ClassConstants
java.lang.Object
java.io.Reader
java.io.FilterReader
org.apache.tools.ant.filters.BaseFilterReader
org.apache.tools.ant.filters.ClassConstants
- All Implemented Interfaces:
- Closeable,- AutoCloseable,- Readable,- ChainableReader
Assembles the constants declared in a Java class in
 
key1=value1(line separator)key2=value2
 format.
Notes:
- This filter uses the BCEL external toolkit.
- This assembles only those constants that are not created
 using the syntax new whatever()
- This assembles constants declared using the basic datatypes and String only.
- The access modifiers of the declared constants do not matter.
Example:
<classconstants/>Or:
<filterreader
    classname="org.apache.tools.ant.filters.ClassConstants"/>- 
Field SummaryFields inherited from class java.io.FilterReaderin
- 
Constructor SummaryConstructorsConstructorDescriptionConstructor for "dummy" instances.ClassConstants(Reader in) Creates a new filtered reader.
- 
Method SummaryMethods inherited from class org.apache.tools.ant.filters.BaseFilterReadergetInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skipMethods inherited from class java.io.FilterReaderclose, mark, markSupported, ready, resetMethods inherited from class java.io.ReadernullReader, read, read, transferTo
- 
Constructor Details- 
ClassConstantspublic ClassConstants()Constructor for "dummy" instances.- See Also:
 
- 
ClassConstantsCreates a new filtered reader. The contents of the passed-in reader are expected to be the name of the class from which to produce a list of constants.- Parameters:
- in- A Reader object providing the underlying stream. Must not be- null.
 
 
- 
- 
Method Details- 
readReads and assembles the constants declared in a class file.- Overrides:
- readin class- FilterReader
- Returns:
- the next character in the list of constants, or -1 if the end of the resulting stream has been reached
- Throws:
- IOException- if the underlying stream throws an IOException during reading, or if the constants for the specified class cannot be read (for example due to the class not being found).
 
- 
chainCreates a new ClassConstants using the passed in Reader for instantiation.- Specified by:
- chainin interface- ChainableReader
- Parameters:
- rdr- A Reader object providing the underlying stream. Must not be- null.
- Returns:
- a new filter based on this configuration, but filtering the specified reader
 
 
-