Package com.icl.saxon.sort
Class SortKeyDefinition
java.lang.Object
com.icl.saxon.sort.SortKeyDefinition
A SortKeyDefinition defines one component of a sort key.
Note that most attributes defining the sort key can be attribute value templates, and can therefore vary from one invocation to another. We hold them as expressions, but optimise for the case where the attributes are all fixed strings: in this case we can use the same Comparer object each time.
Note that most attributes defining the sort key can be attribute value templates, and can therefore vary from one invocation to another. We hold them as expressions, but optimise for the case where the attributes are all fixed strings: in this case we can use the same Comparer object each time.
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoid
If possible, use the same comparer every timegetComparer
(Context context) Get a Comparer which can be used to compare two values according to this sort key.getOrder()
void
setCaseOrder
(Expression exp) Set the case order.void
setDataType
(Expression exp) Set the data type.void
setLanguage
(Expression exp) Set the language.void
setOrder
(Expression exp) Set the order.void
setSortKey
(Expression exp) Set the expression used as the sort keyvoid
Set the static context.
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Constructor Details
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SortKeyDefinition
public SortKeyDefinition()
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Method Details
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setSortKey
Set the expression used as the sort key -
setOrder
Set the order. This is supplied as an expression which must evaluate to "ascending" or "descending". If the order is fixed, supply e.g. new StringValue("ascending"). Default is "ascending". -
setDataType
Set the data type. This is supplied as an expression which must evaluate to "text", "number", or a QName. If the data type is fixed, supply e.g. new StringValue("text"). Default is "text". -
setCaseOrder
Set the case order. This is supplied as an expression which must evaluate to "upper-first" or "lower-first" or "#default". If the order is fixed, supply e.g. new StringValue("lower-first"). Default is "#default". -
setLanguage
Set the language. This is supplied as an expression which evaluate to the language name. If the order is fixed, supply e.g. new StringValue("de"). Default is "en". -
setStaticContext
Set the static context. This is used only for resolving any QName supplied in the data-type property. -
getSortKey
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getOrder
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getDataType
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getCaseOrder
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getLanguage
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bindComparer
If possible, use the same comparer every time- Throws:
XPathException
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getComparer
Get a Comparer which can be used to compare two values according to this sort key.- Throws:
XPathException
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