de.vandermeer.skb.base.utils

Class Skb_CollectionUtils

java.lang.Object

de.vandermeer.skb.base.utils.Skb_CollectionUtils

public abstract class Skb_CollectionUtils
extends Object

Transformation methods for collections.

Version:

v0.0.3 build 150618 (18-Jun-15) for Java 1.8

Author:

Sven van der Meer <vdmeer.sven@mykolab.com>

Constructor Summary

Constructors

Constructor and Description
Skb_CollectionUtils()

Method Summary

Modifier and Type	Method and Description
static Skb_Transformer<Collection<?>,String>	COLLECTION_TO_TEXT() Returns a transformer that takes a collection and transforms it into a textual representation, for instance for debug output.
static Object	GET_FIRST_ELEMENT(Collection<?> coll) Returns the first element of the given collection.
static String	TRANSFORM(Collection<?> coll) Transforms a collection into a textual representation, for instance for debug output

Methods inherited from class java.lang.Object

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

Constructor Detail

Skb_CollectionUtils

public Skb_CollectionUtils()

Method Detail

COLLECTION_TO_TEXT

public static final Skb_Transformer<Collection<?>,String> COLLECTION_TO_TEXT()

Returns a transformer that takes a collection and transforms it into a textual representation, for instance for debug output.

Returns:

transformer for textual representation of the collection

TRANSFORM

public static final String TRANSFORM(Collection<?> coll)

Transforms a collection into a textual representation, for instance for debug output

Parameters:

coll - input collection

Returns:

textual representation of the collection, empty string as default

GET_FIRST_ELEMENT

public static Object GET_FIRST_ELEMENT(Collection<?> coll)

Returns the first element of the given collection.

Parameters:

coll - input collection

Returns:

first element of the collection or null if not applicable