Package org.apache.torque.util
Class UniqueColumnList
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractList<E>
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- java.util.ArrayList<Column>
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- org.apache.torque.util.UniqueColumnList
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- All Implemented Interfaces:
Serializable
,Cloneable
,Iterable<Column>
,Collection<Column>
,List<Column>
,RandomAccess
public class UniqueColumnList extends ArrayList<Column>
List with unique entries. UniqueList does not allow null nor will Columns with the same SQL expression be added twice.- Version:
- $Id: UniqueColumnList.java 1839288 2018-08-27 09:48:33Z tv $
- Author:
- Martin Poeschl
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class java.util.AbstractList
modCount
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Constructor Summary
Constructors Constructor Description UniqueColumnList()
Constructs an empty UniqueList.UniqueColumnList(UniqueColumnList list)
Copy-constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
add(Column column)
Adds a Column to the list, if no column with the same SQL Expression is not already contained.boolean
containsSqlExpression(Column column)
Checks if this list already contains a column with the same SQL expression.-
Methods inherited from class java.util.ArrayList
add, addAll, addAll, clear, clone, contains, ensureCapacity, equals, forEach, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeIf, removeRange, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray, trimToSize
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Methods inherited from class java.util.AbstractCollection
containsAll, toString
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.util.Collection
parallelStream, stream, toArray
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Methods inherited from interface java.util.List
containsAll
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Constructor Detail
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UniqueColumnList
public UniqueColumnList()
Constructs an empty UniqueList.
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UniqueColumnList
public UniqueColumnList(UniqueColumnList list)
Copy-constructor. Creates a shallow copy of an UniqueList.- Parameters:
list
- the uniqueList to copy
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Method Detail
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add
public boolean add(Column column)
Adds a Column to the list, if no column with the same SQL Expression is not already contained.- Specified by:
add
in interfaceCollection<Column>
- Specified by:
add
in interfaceList<Column>
- Overrides:
add
in classArrayList<Column>
- Parameters:
column
- the Column to add, not null.- Returns:
- true if the Object is added.
- Throws:
NullPointerException
- if column is null.
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containsSqlExpression
public boolean containsSqlExpression(Column column)
Checks if this list already contains a column with the same SQL expression.- Parameters:
column
- the column to check, not null.- Returns:
- true if a column with the same Sql Expression is contained, false otherwise.
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