com.google.common.base

Class Joiner.MapJoiner

java.lang.Object

com.google.common.base.Joiner.MapJoiner

Enclosing class:

Joiner

public static final class Joiner.MapJoiner
extends Object

An object that joins map entries in the same manner as Joiner joins iterables and arrays. Like Joiner, it is thread-safe and immutable.

In addition to operating on Map instances, MapJoiner can operate on Multimap entries in two distinct modes:

• To output a separate entry for each key-value pair, pass multimap.entries() to a MapJoiner method that accepts entries as input, and receive output of the form key1=A&key1=B&key2=C.
• To output a single entry for each key, pass multimap.asMap() to a MapJoiner method that accepts a map as input, and receive output of the form key1=[A, B]&key2=C.

Since:

2.0 (imported from Google Collections Library)

Method Summary

Methods

Modifier and Type	Method and Description
<A extends Appendable,I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> A	appendTo(A appendable, I entries) Deprecated. use appendTo(Appendable, Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.
<A extends Appendable> A	appendTo(A appendable, Iterable<? extends Map.Entry<?,?>> entries) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.
<A extends Appendable> A	appendTo(A appendable, Iterator<? extends Map.Entry<?,?>> parts) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.
<A extends Appendable> A	appendTo(A appendable, Map<?,?> map) Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to appendable.
<I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> StringBuilder	appendTo(StringBuilder builder, I entries) Deprecated. use appendTo(StringBuilder, Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.
StringBuilder	appendTo(StringBuilder builder, Iterable<? extends Map.Entry<?,?>> entries) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder.
StringBuilder	appendTo(StringBuilder builder, Iterator<? extends Map.Entry<?,?>> entries) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder.
StringBuilder	appendTo(StringBuilder builder, Map<?,?> map) Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to builder.
<I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> String	join(I entries) Deprecated. use join(Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.
String	join(Iterable<? extends Map.Entry<?,?>> entries) Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
String	join(Iterator<? extends Map.Entry<?,?>> entries) Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
String	join(Map<?,?> map) Returns a string containing the string representation of each entry of map, using the previously configured separator and key-value separator.
Joiner.MapJoiner	useForNull(String nullText) Returns a map joiner with the same behavior as this one, except automatically substituting nullText for any provided null keys or values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

appendTo

public <A extends Appendable> A appendTo(A appendable,
                                Map<?,?> map)
                              throws IOException

Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to appendable.

Throws:

IOException

appendTo

public StringBuilder appendTo(StringBuilder builder,
                     Map<?,?> map)

Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Map), except that it does not throw IOException.

join

public String join(Map<?,?> map)

Returns a string containing the string representation of each entry of map, using the previously configured separator and key-value separator.

appendTo

@Beta
@Deprecated
public <A extends Appendable,I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> A appendTo(A appendable,
                                                                                                                                         I entries)
                              throws IOException

Deprecated. use appendTo(Appendable, Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.

Deprecated.

Throws:

IOException

Since:

11.0

appendTo

@Beta
public <A extends Appendable> A appendTo(A appendable,
                                     Iterable<? extends Map.Entry<?,?>> entries)
                              throws IOException

Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.

Throws:

IOException

Since:

10.0

appendTo

@Beta
public <A extends Appendable> A appendTo(A appendable,
                                     Iterator<? extends Map.Entry<?,?>> parts)
                              throws IOException

Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.

Throws:

IOException

Since:

11.0

appendTo

@Beta
@Deprecated
public <I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> StringBuilder appendTo(StringBuilder builder,
                                                                                                                                I entries)
                       throws IOException

Deprecated. use appendTo(StringBuilder, Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.

Deprecated.

Throws:

IOException

Since:

11.0

appendTo

@Beta
public StringBuilder appendTo(StringBuilder builder,
                          Iterable<? extends Map.Entry<?,?>> entries)

Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Iterable), except that it does not throw IOException.

Since:

10.0

appendTo

@Beta
public StringBuilder appendTo(StringBuilder builder,
                          Iterator<? extends Map.Entry<?,?>> entries)

Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Iterable), except that it does not throw IOException.

Since:

11.0

join

@Beta
@Deprecated
public <I extends Object & Iterable<? extends Map.Entry<?,?>> & Iterator<? extends Map.Entry<?,?>>> String join(I entries)
            throws IOException

Deprecated. use join(Iterator) by casting entries to Iterator<? extends Entry<?, ?>>, or better yet, by implementing only Iterator and not Iterable. This method is scheduled for deletion in June 2013.

Deprecated.

Throws:

IOException

Since:

11.0

join

@Beta
public String join(Iterable<? extends Map.Entry<?,?>> entries)

Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.

Since:

10.0

join

@Beta
public String join(Iterator<? extends Map.Entry<?,?>> entries)

Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.

Since:

11.0

useForNull

@CheckReturnValue
public Joiner.MapJoiner useForNull(String nullText)

Returns a map joiner with the same behavior as this one, except automatically substituting nullText for any provided null keys or values.