processing.data

Class StringDict

Object

StringDict

public class StringDict
extends Object

A simple table class to use a String as a lookup for another String value.

See Also:

IntDict, FloatDict

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	StringDict.Entry

Constructor Summary

Constructors

Constructor and Description
StringDict()
StringDict(BufferedReader reader) Read a set of entries from a Reader that has each key/value pair on a single line, separated by a tab.
StringDict(int length) Create a new lookup pre-allocated to a specific length.
StringDict(String[][] pairs) Constructor to allow (more intuitive) inline initialization, e.g.:
StringDict(String[] keys, String[] values)
StringDict(TableRow row) Create a dictionary that maps between column titles and cell entries in a TableRow.

Method Summary

Modifier and Type	Method and Description
void	clear() Remove all entries.
StringDict	copy() Returns a duplicate copy of this object.
Iterable<StringDict.Entry>	entries()
Iterator<StringDict.Entry>	entryIterator()
String	get(String key) Return a value for the specified key.
String	get(String key, String alternate)
boolean	hasKey(String key)
int	index(String what)
String	key(int index)
String[]	keyArray() Return a copy of the internal keys array.
String[]	keyArray(String[] outgoing)
Iterator<String>	keyIterator()
Iterable<String>	keys()
void	print()
String	remove(String key)
String	removeIndex(int index)
void	resize(int length) Resize the internal data, this can only be used to shrink the list.
void	save(File file) Save tab-delimited entries to a file (TSV format, UTF-8 encoding)
void	set(String key, String value)
void	setIndex(int index, String key, String value)
int	size()
void	sortKeys() Sort the keys alphabetically (ignoring case).
void	sortKeysReverse()
void	sortValues() Sort by values in descending order (largest value will be at [0]).
void	sortValuesReverse()
void	swap(int a, int b)
String	toJSON() Return this dictionary as a String in JSON format.
String	toString()
String	value(int index)
String[]	valueArray() Create a new array and copy each of the values into it.
String[]	valueArray(String[] array) Fill an already-allocated array with the values (more efficient than creating a new array each time).
Iterator<String>	valueIterator()
Iterable<String>	values()
void	write(PrintWriter writer) Write tab-delimited entries to a PrintWriter

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StringDict

public StringDict()

StringDict

public StringDict(int length)

Create a new lookup pre-allocated to a specific length. This will not change the size(), but is more efficient than not specifying a length. Use it when you know the rough size of the thing you're creating.

StringDict

public StringDict(BufferedReader reader)

Read a set of entries from a Reader that has each key/value pair on a single line, separated by a tab.

StringDict

public StringDict(String[] keys,
                  String[] values)

StringDict

public StringDict(String[][] pairs)

Constructor to allow (more intuitive) inline initialization, e.g.:

 new StringDict(new String[][] {
   { "key1", "value1" },
   { "key2", "value2" }
 });
 

It's no Python, but beats a static { } block with HashMap.put() statements.

StringDict

public StringDict(TableRow row)

Create a dictionary that maps between column titles and cell entries in a TableRow. If two columns have the same name, the later column's values will override the earlier values.

Method Detail

size

public int size()

In brief:

Returns the number of key/value pairs

resize

public void resize(int length)

Resize the internal data, this can only be used to shrink the list. Helpful for situations like sorting and then grabbing the top 50 entries.

clear

public void clear()

Remove all entries.

In brief:

Remove all entries

entries

public Iterable<StringDict.Entry> entries()

entryIterator

public Iterator<StringDict.Entry> entryIterator()

key

public String key(int index)

keys

public Iterable<String> keys()

keyIterator

public Iterator<String> keyIterator()

keyArray

public String[] keyArray()

Return a copy of the internal keys array. This array can be modified.

In brief:

Return a copy of the internal keys array

keyArray

public String[] keyArray(String[] outgoing)

value

public String value(int index)

values

public Iterable<String> values()

In brief:

Return the internal array being used to store the values

valueIterator

public Iterator<String> valueIterator()

valueArray

public String[] valueArray()

Create a new array and copy each of the values into it.

In brief:

Create a new array and copy each of the values into it

valueArray

public String[] valueArray(String[] array)

Fill an already-allocated array with the values (more efficient than creating a new array each time). If 'array' is null, or not the same size as the number of values, a new array will be allocated and returned.

get

public String get(String key)

Return a value for the specified key.

In brief:

Return a value for the specified key

get

public String get(String key,
                  String alternate)

set

public void set(String key,
                String value)

In brief:

Create a new key/value pair or change the value of one

setIndex

public void setIndex(int index,
                     String key,
                     String value)

index

public int index(String what)

hasKey

public boolean hasKey(String key)

In brief:

Check if a key is a part of the data structure

remove

public String remove(String key)

In brief:

Remove a key/value pair

removeIndex

public String removeIndex(int index)

swap

public void swap(int a,
                 int b)

sortKeys

public void sortKeys()

Sort the keys alphabetically (ignoring case). Uses the value as a tie-breaker (only really possible with a key that has a case change).

In brief:

Sort the keys alphabetically

sortKeysReverse

public void sortKeysReverse()

In brief:

Sort the keys alphabetically in reverse

sortValues

public void sortValues()

Sort by values in descending order (largest value will be at [0]).

In brief:

Sort by values in ascending order

sortValuesReverse

public void sortValuesReverse()

In brief:

Sort by values in descending order

copy

public StringDict copy()

Returns a duplicate copy of this object.

print

public void print()

save

public void save(File file)

Save tab-delimited entries to a file (TSV format, UTF-8 encoding)

write

public void write(PrintWriter writer)

Write tab-delimited entries to a PrintWriter

toJSON

public String toJSON()

Return this dictionary as a String in JSON format.

toString

public String toString()

Overrides:

toString in class Object