Package net.sf.basedb.core.query
Class CaseExpression
java.lang.Object
net.sf.basedb.core.query.CaseExpression
- All Implemented Interfaces:
Expression
,QueryElement
An SQL case expression:
CASE WHEN r1 THEN e1 WHEN r2 THEN e2 ... ELSE elseExpression END
- Version:
- 2.0
- Author:
- nicklas
- See Also:
- Last modified
- $Date: 2014-10-22 18:41:55 +0200 (on, 22 okt 2014) $
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Field Summary
Modifier and TypeFieldDescriptionprivate final Expression
private int
private final WhenStatement[]
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionboolean
This expression is equal to another CaseExpression if both contains the same when statements (disregarding order) and else expression.Collection<? extends QueryElement>
Get the children of this query element or null if it has no children.int
hashCode()
Create a query language string of the query element.toString()
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Field Details
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elseExpression
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whenStatements
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hashCode
private int hashCode
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Constructor Details
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CaseExpression
CaseExpression(Expression elseExpression, WhenStatement... whenStatements)
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Method Details
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toQl
Description copied from interface:QueryElement
Create a query language string of the query element. Use theQuery.getQueryType()
method to find out which query language is wanted in case the element requires different syntax for different languages.- Specified by:
toQl
in interfaceQueryElement
- Parameters:
query
- The query that is about to be executeddc
- TheDbControl
object used to execute the query- Throws:
BaseException
- If there is any other error
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getChildren
Description copied from interface:QueryElement
Get the children of this query element or null if it has no children. For example theAddExpression
has two children, the expression beeing added.- Specified by:
getChildren
in interfaceQueryElement
- Returns:
- All expressions and restrictions used
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toString
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equals
This expression is equal to another CaseExpression if both contains the same when statements (disregarding order) and else expression. -
hashCode
public int hashCode()
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