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java.lang.Object net.sf.saxon.lib.ExtensionFunctionDefinition com.saxonica.functions.xpath3.TrigonometricFn
public abstract class TrigonometricFn
Abstract class providing functionality common to functions math:sin(), math:cos(), math:sqrt() etc; contains the concrete implementations of these functions as inner subclasses
Nested Class Summary | |
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static class |
TrigonometricFn.AcosFn
Implement math:acos |
static class |
TrigonometricFn.AsinFn
Implement math:asin |
static class |
TrigonometricFn.AtanFn
Implement math:atan |
static class |
TrigonometricFn.CosFn
Implement math:cos |
static class |
TrigonometricFn.Exp10Fn
Implement math:exp10 |
static class |
TrigonometricFn.ExpFn
Implement math:exp |
static class |
TrigonometricFn.Log10Fn
Implement math:log10 |
static class |
TrigonometricFn.LogFn
Implement math:log |
static class |
TrigonometricFn.SinFn
Implement math:sin |
static class |
TrigonometricFn.SqrtFn
Implement math:sqrt |
static class |
TrigonometricFn.TanFn
Implement math:tan |
Constructor Summary | |
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TrigonometricFn()
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Method Summary | |
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protected abstract double |
compute(double input)
The function that does the work, which must be implemented in subclasses |
SequenceType[] |
getArgumentTypes()
Get the required types for the arguments of this function. |
int |
getMaximumNumberOfArguments()
Get the maximum number of arguments allowed by the function. |
int |
getMinimumNumberOfArguments()
Get the minimum number of arguments required by the function |
SequenceType |
getResultType(SequenceType[] suppliedArgumentTypes)
Get the type of the result of the function |
ExtensionFunctionCall |
makeCallExpression()
Create a call on this function. |
boolean |
trustResultType()
Ask whether the result actually returned by the function can be trusted, or whether it should be checked against the declared type. |
Methods inherited from class net.sf.saxon.lib.ExtensionFunctionDefinition |
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dependsOnFocus, getFunctionQName, hasSideEffects |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TrigonometricFn()
Method Detail |
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public int getMinimumNumberOfArguments()
The default implementation returns the number of items in the result of calling
getArgumentTypes()
getMinimumNumberOfArguments
in class ExtensionFunctionDefinition
public int getMaximumNumberOfArguments()
The default implementation returns the value of getMinimumNumberOfArguments()
getMaximumNumberOfArguments
in class ExtensionFunctionDefinition
public boolean trustResultType()
trustResultType
in class ExtensionFunctionDefinition
public SequenceType[] getArgumentTypes()
This method must be implemented in all subtypes.
getArgumentTypes
in class ExtensionFunctionDefinition
getMaximumNumberOfArguments()
; however for functions
that allow a variable number of arguments, the array can be smaller than this, with the last
entry in the array providing the required type for all the remaining arguments.public SequenceType getResultType(SequenceType[] suppliedArgumentTypes)
This method must be implemented in all subtypes.
getResultType
in class ExtensionFunctionDefinition
suppliedArgumentTypes
- the static types of the supplied arguments to the function.
This is provided so that a more precise result type can be returned in the common
case where the type of the result depends on the types of the arguments.
protected abstract double compute(double input)
input
- the input value
public ExtensionFunctionCall makeCallExpression()
makeCallExpression
in class ExtensionFunctionDefinition
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