public final class Bindery
extends java.lang.Object
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Bindery() |
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void |
allocateGlobals(SlotManager map)
Define how many slots are needed for global variables
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static Value |
applyFunctionConversionRules(ValueRepresentation value,
SequenceType requiredType,
XPathContext context)
Apply the function conversion rules
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void |
assignGlobalVariable(GlobalVariable binding,
ValueRepresentation value)
Assign a new value to a global variable.
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void |
defineGlobalParameters(GlobalParameterSet params)
Define global parameters
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void |
defineGlobalVariable(GlobalVariable binding,
ValueRepresentation value)
Provide a value for a global variable
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ValueRepresentation |
getGlobalVariable(int slot)
Get the value of a global variable whose slot number is known
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SlotManager |
getGlobalVariableMap()
Get the Global Variable Map, containing the mapping of variable names (fingerprints)
to slot numbers.
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ValueRepresentation[] |
getGlobalVariables()
Get all the global variables, as an array.
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ValueRepresentation |
getGlobalVariableValue(GlobalVariable binding)
Get the value of a global variable
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void |
setExecuting(GlobalVariable binding,
boolean executing)
Set/Unset a flag to indicate that a particular global variable is currently being
evaluated.
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void |
setGlobalVariable(int slot,
ValueRepresentation value)
Set the value of a global variable whose slot number is known
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boolean |
useGlobalParameter(StructuredQName qName,
int slot,
SequenceType requiredType,
XPathContext context)
Use global parameter.
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public void allocateGlobals(SlotManager map)
map
- the SlotManager that keeps track of slot allocation for global variables.public void defineGlobalParameters(GlobalParameterSet params)
params
- The ParameterSet passed in by the user, eg. from the command linepublic boolean useGlobalParameter(StructuredQName qName, int slot, SequenceType requiredType, XPathContext context) throws XPathException
qName
- The name of the parameterslot
- The slot number allocated to the parameterrequiredType
- The declared type of the parametercontext
- the XPath dynamic evaluation contextXPathException
public static Value applyFunctionConversionRules(ValueRepresentation value, SequenceType requiredType, XPathContext context) throws XPathException
value
- a value to be convertedrequiredType
- the required typecontext
- the conversion contextXPathException
- if the value cannot be converted to the required typepublic void defineGlobalVariable(GlobalVariable binding, ValueRepresentation value)
binding
- identifies the variablevalue
- the value of the variablepublic void setExecuting(GlobalVariable binding, boolean executing) throws XPathException
binding
- the global variable in questionexecuting
- true when we start evaluating the variable, false when evaluation has finishedXPathException
- If an attempt is made to set the flag when it is already set, this means
the definition of the variable is circular.public ValueRepresentation getGlobalVariableValue(GlobalVariable binding)
binding
- the Binding that establishes the unique instance of the variablepublic ValueRepresentation getGlobalVariable(int slot)
slot
- the slot number of the required variablepublic void setGlobalVariable(int slot, ValueRepresentation value)
slot
- the slot number of the required variablevalue
- the Value of the variable if defined, null otherwise.public void assignGlobalVariable(GlobalVariable binding, ValueRepresentation value)
binding
- identifies the global variable or parametervalue
- the value to be assigned to the variablepublic SlotManager getGlobalVariableMap()
public ValueRepresentation[] getGlobalVariables()