Package net.sf.basedb.core.query
Class SqlColumnExpression
java.lang.Object
net.sf.basedb.core.query.SqlColumnExpression
- All Implemented Interfaces:
Expression
,QueryElement
An expression representing the column in a
database tabe: alias.column.
Throws an UnsupportedOperationException
if
Query.getQueryType()
isn't QueryType.SQL
.
- Version:
- 2.0
- Author:
- Nicklas
- See Also:
- Last modified
- $Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $
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Field Summary
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionboolean
This expression is equal to another SqlColumnExpression if their aliases and columns are equal.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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alias
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column
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Constructor Details
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SqlColumnExpression
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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:
- Always null
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toString
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equals
This expression is equal to another SqlColumnExpression if their aliases and columns are equal. -
hashCode
public int hashCode()
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