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 java.lang.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

<A extends java.lang.Appendable,I extends java.lang.Object & java.lang.Iterable<? extends java.util.Map.Entry<?,?>> & java.util.Iterator<? extends java.util.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 java.lang.Appendable> A	appendTo(A appendable, java.lang.Iterable<? extends java.util.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 java.lang.Appendable> A	appendTo(A appendable, java.util.Iterator<? extends java.util.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 java.lang.Appendable> A	appendTo(A appendable, java.util.Map<?,?> map) Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to appendable.
<I extends java.lang.Object & java.lang.Iterable<? extends java.util.Map.Entry<?,?>> & java.util.Iterator<? extends java.util.Map.Entry<?,?>>> java.lang.StringBuilder	appendTo(java.lang.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.
java.lang.StringBuilder	appendTo(java.lang.StringBuilder builder, java.lang.Iterable<? extends java.util.Map.Entry<?,?>> entries) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder.
java.lang.StringBuilder	appendTo(java.lang.StringBuilder builder, java.util.Iterator<? extends java.util.Map.Entry<?,?>> entries) Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder.
java.lang.StringBuilder	appendTo(java.lang.StringBuilder builder, java.util.Map<?,?> map) Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to builder.
<I extends java.lang.Object & java.lang.Iterable<? extends java.util.Map.Entry<?,?>> & java.util.Iterator<? extends java.util.Map.Entry<?,?>>> java.lang.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.
java.lang.String	join(java.lang.Iterable<? extends java.util.Map.Entry<?,?>> entries) Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
java.lang.String	join(java.util.Iterator<? extends java.util.Map.Entry<?,?>> entries) Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
java.lang.String	join(java.util.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(java.lang.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 java.lang.Appendable> A appendTo(A appendable,
                                                   java.util.Map<?,?> map)
                                        throws java.io.IOException

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

Throws:

java.io.IOException

appendTo

public java.lang.StringBuilder appendTo(java.lang.StringBuilder builder,
                                        java.util.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 java.lang.String join(java.util.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 java.lang.Appendable,I extends java.lang.Object & java.lang.Iterable<? extends java.util.Map.Entry<?,?>> & java.util.Iterator<? extends java.util.Map.Entry<?,?>>> A appendTo(A appendable,
                                                                                                                                                                                                              I entries)
                                        throws java.io.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:

java.io.IOException

Since:

11.0

appendTo

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

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

Throws:

java.io.IOException

Since:

10.0

appendTo

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

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

Throws:

java.io.IOException

Since:

11.0

appendTo

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

java.io.IOException

Since:

11.0

appendTo

@Beta
public java.lang.StringBuilder appendTo(java.lang.StringBuilder builder,
                                             java.lang.Iterable<? extends java.util.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 java.lang.StringBuilder appendTo(java.lang.StringBuilder builder,
                                             java.util.Iterator<? extends java.util.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 java.lang.Object & java.lang.Iterable<? extends java.util.Map.Entry<?,?>> & java.util.Iterator<? extends java.util.Map.Entry<?,?>>> java.lang.String join(I entries)
                      throws java.io.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:

java.io.IOException

Since:

11.0

join

@Beta
public java.lang.String join(java.lang.Iterable<? extends java.util.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 java.lang.String join(java.util.Iterator<? extends java.util.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(java.lang.String nullText)

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