Package net.sf.basedb.core.query
Class CaseExpression
java.lang.Object
net.sf.basedb.core.query.CaseExpression
- All Implemented Interfaces:
Expression
,QueryElement
public class CaseExpression extends Object implements Expression
An SQL case expression:
CASE WHEN r1 THEN e1 WHEN r2 THEN e2 ... ELSE elseExpression END
- Version:
- 2.0
- Author:
- nicklas
- See Also:
Expressions.caseWhen(Expression, WhenStatement[])
- Last modified
- $Date: 2014-10-22 18:41:55 +0200 (on, 22 okt 2014) $
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Field Summary
Fields Modifier and Type Field Description private Expression
elseExpression
private int
hashCode
private WhenStatement[]
whenStatements
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Constructor Summary
Constructors Constructor Description CaseExpression(Expression elseExpression, WhenStatement... whenStatements)
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Method Summary
Modifier and Type Method Description boolean
equals(Object other)
This expression is equal to another CaseExpression if both contains the same when statements (disregarding order) and else expression.Collection<? extends QueryElement>
getChildren()
Get the children of this query element or null if it has no children.int
hashCode()
String
toQl(Query query, DbControl dc)
Create a query language string of the query element.String
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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