Package org.apache.tools.ant.filters
Class ClassConstants
- java.lang.Object
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- java.io.Reader
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- java.io.FilterReader
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- org.apache.tools.ant.filters.BaseFilterReader
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- org.apache.tools.ant.filters.ClassConstants
 
 
 
 
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- All Implemented Interfaces:
- java.io.Closeable,- java.lang.AutoCloseable,- java.lang.Readable,- ChainableReader
 
 public final class ClassConstants extends BaseFilterReader implements ChainableReader Assembles the constants declared in a Java class inkey1=value1(line separator)key2=value2format.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"/>
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Constructor SummaryConstructors Constructor Description ClassConstants()Constructor for "dummy" instances.ClassConstants(java.io.Reader in)Creates a new filtered reader.
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Method Summary- 
Methods inherited from class org.apache.tools.ant.filters.BaseFilterReadergetInitialized, getProject, read, readFully, readLine, setInitialized, setProject, skip
 
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Constructor Detail- 
ClassConstantspublic ClassConstants() Constructor for "dummy" instances.- See Also:
- BaseFilterReader()
 
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ClassConstantspublic ClassConstants(java.io.Reader in) Creates 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.
 
 
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Method Detail- 
readpublic int read() throws java.io.IOExceptionReads and assembles the constants declared in a class file.- Overrides:
- readin class- java.io.FilterReader
- Returns:
- the next character in the list of constants, or -1 if the end of the resulting stream has been reached
- Throws:
- java.io.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).
 
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chainpublic java.io.Reader chain(java.io.Reader rdr) Creates 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
 
 
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