public class FilterCollectionWriter
extends java.io.Writer
Collection
of writers. This is in contrast to
FilterWriter
which is backed by a single Writer
.
This abstract class provides default methods that pass all requests to the contained writers. Subclasses should likely override some of these methods.
The class Writer
defines method signatures with throws
IOException
, which in this class are
actually IOExceptionList
containing a list of IOIndexedException
.
Modifier and Type | Field and Description |
---|---|
protected java.util.Collection<java.io.Writer> |
EMPTY_WRITERS
Empty and immutable collection of writers.
|
protected java.util.Collection<java.io.Writer> |
writers
The underlying writers.
|
Modifier | Constructor and Description |
---|---|
protected |
FilterCollectionWriter(java.util.Collection<java.io.Writer> writers)
Creates a new filtered collection writer.
|
protected |
FilterCollectionWriter(java.io.Writer... writers)
Creates a new filtered collection writer.
|
Modifier and Type | Method and Description |
---|---|
private java.util.List<java.lang.Exception> |
add(java.util.List<java.lang.Exception> causeList,
int i,
java.io.IOException e)
Adds an indexed exception to the list.
|
java.io.Writer |
append(char c) |
java.io.Writer |
append(java.lang.CharSequence csq) |
java.io.Writer |
append(java.lang.CharSequence csq,
int start,
int end) |
void |
close() |
void |
flush()
Flushes the stream.
|
private boolean |
notEmpty(java.util.List<java.lang.Exception> causeList)
Tests if the given list is empty in a null-safe manner.
|
void |
write(char[] cbuf) |
void |
write(char[] cbuf,
int off,
int len)
Writes a portion of an array of characters.
|
void |
write(int c)
Writes a single character.
|
void |
write(java.lang.String str) |
void |
write(java.lang.String str,
int off,
int len)
Writes a portion of a string.
|
protected final java.util.Collection<java.io.Writer> EMPTY_WRITERS
protected final java.util.Collection<java.io.Writer> writers
protected FilterCollectionWriter(java.util.Collection<java.io.Writer> writers)
writers
- Writers to provide the underlying targets.protected FilterCollectionWriter(java.io.Writer... writers)
writers
- Writers to provide the underlying targets.private java.util.List<java.lang.Exception> add(java.util.List<java.lang.Exception> causeList, int i, java.io.IOException e)
causeList
- The target list.i
- The index.e
- The cause.public java.io.Writer append(char c) throws java.io.IOException
append
in interface java.lang.Appendable
append
in class java.io.Writer
java.io.IOException
public java.io.Writer append(java.lang.CharSequence csq) throws java.io.IOException
append
in interface java.lang.Appendable
append
in class java.io.Writer
java.io.IOException
public java.io.Writer append(java.lang.CharSequence csq, int start, int end) throws java.io.IOException
append
in interface java.lang.Appendable
append
in class java.io.Writer
java.io.IOException
public void close() throws java.io.IOException
close
in interface java.io.Closeable
close
in interface java.lang.AutoCloseable
close
in class java.io.Writer
java.io.IOException
public void flush() throws java.io.IOException
flush
in interface java.io.Flushable
flush
in class java.io.Writer
java.io.IOException
- If an I/O error occursprivate boolean notEmpty(java.util.List<java.lang.Exception> causeList)
causeList
- the list to test.public void write(char[] cbuf) throws java.io.IOException
write
in class java.io.Writer
java.io.IOException
public void write(char[] cbuf, int off, int len) throws java.io.IOException
write
in class java.io.Writer
cbuf
- Buffer of characters to be writtenoff
- Offset from which to start reading characterslen
- Number of characters to be writtenjava.io.IOException
- If an I/O error occurspublic void write(int c) throws java.io.IOException
write
in class java.io.Writer
java.io.IOException
- If an I/O error occurspublic void write(java.lang.String str) throws java.io.IOException
write
in class java.io.Writer
java.io.IOException
public void write(java.lang.String str, int off, int len) throws java.io.IOException
write
in class java.io.Writer
str
- String to be writtenoff
- Offset from which to start reading characterslen
- Number of characters to be writtenjava.io.IOException
- If an I/O error occurs