OpenJDK 1.23 · com.sun.org.apache.xpath.internal.compiler.Compiler

Modifier and Type	Field and Description
pack-priv int	countOp
private static final boolean	DEBUG
private int	locPathDepth
private PrefixResolver	m_currentPrefixResolver The current prefixResolver for the execution context.
pack-priv ErrorListener	m_errorHandler The error listener where errors will be sent.
private FunctionTable	m_functionTable The FunctionTable for all xpath build-in functions
pack-priv SourceLocator	m_locator The source locator for the expression being compiled.
private static long	s_nextMethodId

Access	Constructor and Description
public	Compiler(ErrorListener Error listener where messages will be sent, or null if messages should be sent to System err. errorHandler, SourceLocator The location object where the expression lives, which may be null, but which, if not null, must be valid over the long haul, in other words, it will not be cloned. locator, FunctionTable The FunctionTable object where the xpath build-in functions are stored. fTable) Construct a Compiler object with a specific ErrorListener and SourceLocator where the expression is located.
public	Compiler() Construct a Compiler instance that has a null error listener and a null source locator.

Method Summary

Modifier and Type	Method and Description
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.And` instance. and(int The current position in the m_opMap array. opPos) Compile an 'and' operation.
protected Expression	Returns: reference to the argument expression. arg(int The current position in the m_opMap array. opPos) Compile a function argument.
public void	assertion(boolean If false, a runtime exception will be thrown. b, String The assertion message, which should be informative. msg) Tell the user of an assertion error, and probably throw an exception.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Bool` instance. bool(int The current position in the m_opMap array. opPos) Compile a 'boolean(...)' operation.
private Expression	Returns: The result of the XPath. compile(int The current position in the xpath.m_opMap array. opPos) This method handles the actual compilation process.
public Expression	Returns: The result of the XPath. compileExpression(int The current position in the xpath.m_opMap array. opPos) Execute the XPath object from a given opcode position.
private Expression	Returns: reference to `com.sun.org.apache.xpath.internal.functions.FuncExtFunction` instance. compileExtension(int The current position in the m_opMap array. opPos) Compile an extension function.
pack-priv Expression	Returns: reference to `com.sun.org.apache.xpath.internal.functions.Function` instance. compileFunction(int The current position in the m_opMap array. opPos) Compile a built-in XPath function.
private Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Operation` instance. compileOperation(Operation non-null reference to parent operation. operation, int The op map position of the parent operation. opPos) Bottle-neck compilation of an operation with left and right operands.
private void	compilePredicates(int The position of the first predicate the m_opMap array. opPos, Expression[] An empty pre-determined array of `com.sun.org.apache.xpath.internal.Expression`s, that will be filled in. predicates) Compiles predicates in the step.
private Expression	Returns: The unary argument. compileUnary(UnaryOperation The parent unary operation. unary, int The position in the op map of the parent operation. opPos) Bottle-neck compilation of a unary operation.
public int	Returns: The number of predicates for this step. countPredicates(int The position of the first predicate the m_opMap array. opPos) Count the number of predicates in the step.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Div` instance. div(int The current position in the m_opMap array. opPos) Compile a 'div' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Equals` instance. equals(int The current position in the m_opMap array. opPos) Compile a '=' operation.
public void	error(String An error msgkey that corresponds to one of the constants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. msg, Object[] An array of arguments represented in the format string, which may be null. args) Overrides com.sun.org.apache.xpath.internal.compiler.OpMap.error. Tell the user of an error, and probably throw an exception.
public Expression[]	Returns: reference to array of `com.sun.org.apache.xpath.internal.Expression` instances. getCompiledPredicates(int The position of the first predicate the m_opMap array. opPos) Compile a zero or more predicates for a given match pattern.
pack-priv FunctionTable	getFunctionTable() Get the function table
public int	Returns: 0 if it is a top-level path. getLocationPathDepth() Get the level of the location path or union being constructed.
public PrefixResolver	Returns: The current prefix resolver, may be null, though hopefully not. getNamespaceContext() Get the current namespace context for the xpath.
private synchronized long	getNextMethodId() Get the next available method id
public int	Returns: `org.w3c.dom.traversal.NodeFilter` bit set that tells what to show for a given node test. getWhatToShow(int the op map position for the location step. opPos) Get a `org.w3c.dom.traversal.NodeFilter` bit set that tells what to show for a given node test.
protected Expression	Returns: reference to the contained expression. group(int The current position in the m_opMap array. opPos) Compile an expression group.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Gt` instance. gt(int The current position in the m_opMap array. opPos) Compile a '>' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Gte` instance. gte(int The current position in the m_opMap array. opPos) Compile a '>=' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.objects.XString` instance. literal(int The current position in the m_opMap array. opPos) Compile a literal string value.
public Expression	Returns: reference to `com.sun.org.apache.xpath.internal.axes.LocPathIterator` instance. locationPath(int The current position in the m_opMap array. opPos) Compile a location path.
public Expression	Returns: reference to `com.sun.org.apache.xpath.internal.patterns.StepPattern` instance. locationPathPattern(int The current position in the m_opMap array. opPos) Compile a location match pattern unit expression.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Lt` instance. lt(int The current position in the m_opMap array. opPos) Compile a '<' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Lte` instance. lte(int The current position in the m_opMap array. opPos) Compile a '<=' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.patterns.UnionPattern` instance. matchPattern(int The current position in the m_opMap array. opPos) Compile an entire match pattern expression.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Minus` instance. minus(int The current position in the m_opMap array. opPos) Compile a '-' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Mod` instance. mod(int The current position in the m_opMap array. opPos) Compile a 'mod' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Mult` instance. mult(int The current position in the m_opMap array. opPos) Compile a '*' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Neg` instance. neg(int The current position in the m_opMap array. opPos) Compile a unary '-' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.NotEquals` instance. notequals(int The current position in the m_opMap array. opPos) Compile a '!=' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Number` instance. number(int The current position in the m_opMap array. opPos) Compile a 'number(...)' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.objects.XNumber` instance. numberlit(int The current position in the m_opMap array. opPos) Compile a literal number value.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Or` instance. or(int The current position in the m_opMap array. opPos) Compile an 'or' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Plus` instance. plus(int The current position in the m_opMap array. opPos) Compile a '+' operation.
public Expression	Returns: the contained predicate expression. predicate(int The current position in the m_opMap array. opPos) Compile a location step predicate expression.
public void	setNamespaceContext(PrefixResolver The resolver for prefixes in the XPath expression. pr) Set the current namespace context for the xpath.
protected StepPattern	Returns: reference to `com.sun.org.apache.xpath.internal.patterns.StepPattern` instance. stepPattern(int The current position in the m_opMap array. opPos, int The number of steps to expect. stepCount, StepPattern The owning StepPattern, which may be null. ancestorPattern) Compile a step pattern unit expression, used for both location paths and match patterns.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.String` instance. string(int The current position in the m_opMap array. opPos) Compile a 'string(...)' operation.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.axes.LocPathIterator` instance. union(int The current position in the m_opMap array. opPos) Compile a location path union.
protected Expression	Returns: reference to `com.sun.org.apache.xpath.internal.operations.Variable` instance. variable(int The current position in the m_opMap array. opPos) Compile a variable reference.
public void	warn(String An error msgkey that corresponds to one of the constants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. msg, Object[] An array of arguments represented in the format string, which may be null. args) Warn the user of an problem.

countOp	back to summary
pack-priv int countOp

DEBUG	back to summary
private static final boolean DEBUG

locPathDepth	back to summary
private int locPathDepth

m_currentPrefixResolver	back to summary
private PrefixResolver m_currentPrefixResolver The current prefixResolver for the execution context.

m_errorHandler	back to summary
pack-priv ErrorListener m_errorHandler The error listener where errors will be sent. If this is null, errors and warnings will be sent to System.err. May be null.

m_functionTable	back to summary
private FunctionTable m_functionTable The FunctionTable for all xpath build-in functions

m_locator	back to summary
pack-priv SourceLocator m_locator The source locator for the expression being compiled. May be null.

s_nextMethodId	back to summary
private static long s_nextMethodId

Compiler	back to summary
public Compiler(ErrorListener errorHandler, SourceLocator locator, FunctionTable fTable) Construct a Compiler object with a specific ErrorListener and SourceLocator where the expression is located. Parameters errorHandler:ErrorListener Error listener where messages will be sent, or null if messages should be sent to System err. locator:SourceLocator The location object where the expression lives, which may be null, but which, if not null, must be valid over the long haul, in other words, it will not be cloned. fTable:FunctionTable The FunctionTable object where the xpath build-in functions are stored.

Compiler	back to summary
public Compiler() Construct a Compiler instance that has a null error listener and a null source locator.

Method Detail

and back to summary

and	back to summary
protected Expression and(int opPos) throws TransformerException Compile an 'and' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.And` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression and(int opPos) throws TransformerException

Compile an 'and' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.And instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

arg	back to summary
protected Expression arg(int opPos) throws TransformerException Compile a function argument. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to the argument expression. Exceptions TransformerException: if a error occurs creating the Expression.

arg

back to summary

protected Expression arg(int opPos) throws TransformerException

Compile a function argument.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to the argument expression.

Exceptions

TransformerException:: if a error occurs creating the Expression.

assertion	back to summary
public void assertion(boolean b, String msg) Tell the user of an assertion error, and probably throw an exception. Parameters b:boolean If false, a runtime exception will be thrown. msg:String The assertion message, which should be informative. Exceptions RuntimeException: if the b argument is false.

assertion

back to summary

public void assertion(boolean b, String msg)

Tell the user of an assertion error, and probably throw an exception.

Parameters

b:boolean: If false, a runtime exception will be thrown.
msg:String: The assertion message, which should be informative.

Exceptions

RuntimeException:: if the b argument is false.

bool back to summary

bool	back to summary
protected Expression bool(int opPos) throws TransformerException Compile a 'boolean(...)' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Bool` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression bool(int opPos) throws TransformerException

Compile a 'boolean(...)' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Bool instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

compile	back to summary
private Expression compile(int opPos) throws TransformerException This method handles the actual compilation process. It is called from the compileExpression method as well as the subsequent processes. See the note for compileExpression. Parameters opPos:int The current position in the xpath.m_opMap array. Returns:Expression The result of the XPath. Exceptions TransformerException: if there is a syntax or other error.

compile

back to summary

private Expression compile(int opPos) throws TransformerException

This method handles the actual compilation process. It is called from the compileExpression method as well as the subsequent processes. See the note for compileExpression.

Parameters

opPos:int: The current position in the xpath.m_opMap array.

Returns:Expression

The result of the XPath.

Exceptions

TransformerException:: if there is a syntax or other error.

compileExpression	back to summary
public Expression compileExpression(int opPos) throws TransformerException Execute the XPath object from a given opcode position. Note that this method is added so that when StackOverflowError is caught the address space can be freed to this point allowing further activities such as reporting the error. Parameters opPos:int The current position in the xpath.m_opMap array. Returns:Expression The result of the XPath. Exceptions TransformerException: if there is a syntax or other error.

compileExpression

back to summary

public Expression compileExpression(int opPos) throws TransformerException

Execute the XPath object from a given opcode position. Note that this method is added so that when StackOverflowError is caught the address space can be freed to this point allowing further activities such as reporting the error.

Parameters

opPos:int: The current position in the xpath.m_opMap array.

Returns:Expression

The result of the XPath.

Exceptions

TransformerException:: if there is a syntax or other error.

compileExtension back to summary

compileExtension	back to summary
private Expression compileExtension(int opPos) throws TransformerException Compile an extension function. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.functions.FuncExtFunction` instance. Exceptions TransformerException: if a error occurs creating the Expression.

private Expression compileExtension(int opPos) throws TransformerException

Compile an extension function.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.functions.FuncExtFunction instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

compileFunction back to summary

compileFunction	back to summary
pack-priv Expression compileFunction(int opPos) throws TransformerException Compile a built-in XPath function. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.functions.Function` instance. Exceptions TransformerException: if a error occurs creating the Expression.

pack-priv Expression compileFunction(int opPos) throws TransformerException

Compile a built-in XPath function.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.functions.Function instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

compileOperation back to summary

compileOperation	back to summary
private Expression compileOperation(Operation operation, int opPos) throws TransformerException Bottle-neck compilation of an operation with left and right operands. Parameters operation:Operation non-null reference to parent operation. opPos:int The op map position of the parent operation. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Operation` instance. Exceptions TransformerException: if there is a syntax or other error.

private Expression compileOperation(Operation operation, int opPos) throws TransformerException

Bottle-neck compilation of an operation with left and right operands.

Parameters

operation:Operation: non-null reference to parent operation.
opPos:int: The op map position of the parent operation.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Operation instance.

Exceptions

TransformerException:: if there is a syntax or other error.

compilePredicates back to summary

compilePredicates	back to summary
private void compilePredicates(int opPos, Expression[] predicates) throws TransformerException Compiles predicates in the step. Parameters opPos:int The position of the first predicate the m_opMap array. predicates:Expression[] An empty pre-determined array of `com.sun.org.apache.xpath.internal.Expression`s, that will be filled in.

private void compilePredicates(int opPos, Expression[] predicates) throws TransformerException

Compiles predicates in the step.

Parameters

opPos:int: The position of the first predicate the m_opMap array.
predicates:Expression[]: An empty pre-determined array of com.sun.org.apache.xpath.internal.Expressions, that will be filled in.

compileUnary	back to summary
private Expression compileUnary(UnaryOperation unary, int opPos) throws TransformerException Bottle-neck compilation of a unary operation. Parameters unary:UnaryOperation The parent unary operation. opPos:int The position in the op map of the parent operation. Returns:Expression The unary argument. Exceptions TransformerException: if syntax or other error occurs.

compileUnary

back to summary

private Expression compileUnary(UnaryOperation unary, int opPos) throws TransformerException

Bottle-neck compilation of a unary operation.

Parameters

unary:UnaryOperation: The parent unary operation.
opPos:int: The position in the op map of the parent operation.

Returns:Expression

The unary argument.

Exceptions

TransformerException:: if syntax or other error occurs.

countPredicates	back to summary
public int countPredicates(int opPos) throws TransformerException Count the number of predicates in the step. Parameters opPos:int The position of the first predicate the m_opMap array. Returns:int The number of predicates for this step. Exceptions TransformerException: if a error occurs creating the Expression.

countPredicates

back to summary

public int countPredicates(int opPos) throws TransformerException

Count the number of predicates in the step.

Parameters

opPos:int: The position of the first predicate the m_opMap array.

Returns:int

The number of predicates for this step.

Exceptions

TransformerException:: if a error occurs creating the Expression.

div back to summary

div	back to summary
protected Expression div(int opPos) throws TransformerException Compile a 'div' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Div` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression div(int opPos) throws TransformerException

Compile a 'div' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Div instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

equals back to summary

equals	back to summary
protected Expression equals(int opPos) throws TransformerException Compile a '=' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Equals` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression equals(int opPos) throws TransformerException

Compile a '=' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Equals instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

error back to summary

error	back to summary
public void error(String msg, Object[] args) throws TransformerException Overrides com.sun.org.apache.xpath.internal.compiler.OpMap.error. Tell the user of an error, and probably throw an exception. Parameters msg:String An error msgkey that corresponds to one of the constants found in `com.sun.org.apache.xpath.internal.res.XPATHErrorResources`, which is a key for a format string. args:Object[] An array of arguments represented in the format string, which may be null. Exceptions TransformerException: if the current ErrorListoner determines to throw an exception.

public void error(String msg, Object[] args) throws TransformerException

Overrides com.sun.org.apache.xpath.internal.compiler.OpMap.error.

Tell the user of an error, and probably throw an exception.

Parameters

msg:String: An error msgkey that corresponds to one of the constants found in com.sun.org.apache.xpath.internal.res.XPATHErrorResources, which is a key for a format string.
args:Object[]: An array of arguments represented in the format string, which may be null.

Exceptions

TransformerException:: if the current ErrorListoner determines to throw an exception.

getCompiledPredicates back to summary

getCompiledPredicates	back to summary
public Expression[] getCompiledPredicates(int opPos) throws TransformerException Compile a zero or more predicates for a given match pattern. Parameters opPos:int The position of the first predicate the m_opMap array. Returns:Expression[] reference to array of `com.sun.org.apache.xpath.internal.Expression` instances. Exceptions TransformerException: if a error occurs creating the Expression.

public Expression[] getCompiledPredicates(int opPos) throws TransformerException

Compile a zero or more predicates for a given match pattern.

Parameters

opPos:int: The position of the first predicate the m_opMap array.

Returns:Expression[]

reference to array of com.sun.org.apache.xpath.internal.Expression instances.

Exceptions

TransformerException:: if a error occurs creating the Expression.

getFunctionTable	back to summary
pack-priv FunctionTable getFunctionTable() Get the function table

getLocationPathDepth	back to summary
public int getLocationPathDepth() Get the level of the location path or union being constructed. Returns:int 0 if it is a top-level path.

getLocationPathDepth

back to summary

public int getLocationPathDepth()

Get the level of the location path or union being constructed.

Returns:int: 0 if it is a top-level path.

getNamespaceContext	back to summary
public PrefixResolver getNamespaceContext() Get the current namespace context for the xpath. Returns:PrefixResolver The current prefix resolver, may be null, though hopefully not.

getNamespaceContext

back to summary

public PrefixResolver getNamespaceContext()

Get the current namespace context for the xpath.

Returns:PrefixResolver: The current prefix resolver, *may* be null, though hopefully not.

getNextMethodId	back to summary
private synchronized long getNextMethodId() Get the next available method id

getWhatToShow back to summary

getWhatToShow	back to summary
public int getWhatToShow(int opPos) Get a `org.w3c.dom.traversal.NodeFilter` bit set that tells what to show for a given node test. Parameters opPos:int the op map position for the location step. Returns:int `org.w3c.dom.traversal.NodeFilter` bit set that tells what to show for a given node test.

public int getWhatToShow(int opPos)

Get a org.w3c.dom.traversal.NodeFilter bit set that tells what to show for a given node test.

Parameters

opPos:int: the op map position for the location step.

Returns:int

org.w3c.dom.traversal.NodeFilter bit set that tells what to show for a given node test.

group	back to summary
protected Expression group(int opPos) throws TransformerException Compile an expression group. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to the contained expression. Exceptions TransformerException: if a error occurs creating the Expression.

group

back to summary

protected Expression group(int opPos) throws TransformerException

Compile an expression group.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to the contained expression.

Exceptions

TransformerException:: if a error occurs creating the Expression.

gt back to summary

gt	back to summary
protected Expression gt(int opPos) throws TransformerException Compile a '>' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Gt` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression gt(int opPos) throws TransformerException

Compile a '>' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Gt instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

gte back to summary

gte	back to summary
protected Expression gte(int opPos) throws TransformerException Compile a '>=' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Gte` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression gte(int opPos) throws TransformerException

Compile a '>=' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Gte instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

literal back to summary

literal	back to summary
protected Expression literal(int opPos) Compile a literal string value. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.objects.XString` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression literal(int opPos)

Compile a literal string value.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.objects.XString instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

locationPath back to summary

locationPath	back to summary
public Expression locationPath(int opPos) throws TransformerException Compile a location path. The LocPathIterator itself may create `com.sun.org.apache.xpath.internal.axes.AxesWalker` children. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.axes.LocPathIterator` instance. Exceptions TransformerException: if a error occurs creating the Expression.

public Expression locationPath(int opPos) throws TransformerException

Compile a location path. The LocPathIterator itself may create com.sun.org.apache.xpath.internal.axes.AxesWalker children.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.axes.LocPathIterator instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

locationPathPattern back to summary

locationPathPattern	back to summary
public Expression locationPathPattern(int opPos) throws TransformerException Compile a location match pattern unit expression. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.patterns.StepPattern` instance. Exceptions TransformerException: if a error occurs creating the Expression.

public Expression locationPathPattern(int opPos) throws TransformerException

Compile a location match pattern unit expression.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.patterns.StepPattern instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

lt back to summary

lt	back to summary
protected Expression lt(int opPos) throws TransformerException Compile a '<' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Lt` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression lt(int opPos) throws TransformerException

Compile a '<' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Lt instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

lte back to summary

lte	back to summary
protected Expression lte(int opPos) throws TransformerException Compile a '<=' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Lte` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression lte(int opPos) throws TransformerException

Compile a '<=' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Lte instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

matchPattern back to summary

matchPattern	back to summary
protected Expression matchPattern(int opPos) throws TransformerException Compile an entire match pattern expression. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.patterns.UnionPattern` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression matchPattern(int opPos) throws TransformerException

Compile an entire match pattern expression.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.patterns.UnionPattern instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

minus back to summary

minus	back to summary
protected Expression minus(int opPos) throws TransformerException Compile a '-' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Minus` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression minus(int opPos) throws TransformerException

Compile a '-' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Minus instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

mod back to summary

mod	back to summary
protected Expression mod(int opPos) throws TransformerException Compile a 'mod' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Mod` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression mod(int opPos) throws TransformerException

Compile a 'mod' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Mod instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

mult back to summary

mult	back to summary
protected Expression mult(int opPos) throws TransformerException Compile a '*' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Mult` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression mult(int opPos) throws TransformerException

Compile a '*' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Mult instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

neg back to summary

neg	back to summary
protected Expression neg(int opPos) throws TransformerException Compile a unary '-' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Neg` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression neg(int opPos) throws TransformerException

Compile a unary '-' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Neg instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

notequals back to summary

notequals	back to summary
protected Expression notequals(int opPos) throws TransformerException Compile a '!=' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.NotEquals` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression notequals(int opPos) throws TransformerException

Compile a '!=' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.NotEquals instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

number back to summary

number	back to summary
protected Expression number(int opPos) throws TransformerException Compile a 'number(...)' operation. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.operations.Number` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression number(int opPos) throws TransformerException

Compile a 'number(...)' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Number instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

numberlit back to summary

numberlit	back to summary
protected Expression numberlit(int opPos) Compile a literal number value. Parameters opPos:int The current position in the m_opMap array. Returns:Expression reference to `com.sun.org.apache.xpath.internal.objects.XNumber` instance. Exceptions TransformerException: if a error occurs creating the Expression.

protected Expression numberlit(int opPos)

Compile a literal number value.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.objects.XNumber instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

or back to summary

protected Expression or(int opPos) throws TransformerException

Compile an 'or' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Or instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

plus back to summary

protected Expression plus(int opPos) throws TransformerException

Compile a '+' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Plus instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

predicate

back to summary

public Expression predicate(int opPos) throws TransformerException

Compile a location step predicate expression.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

the contained predicate expression.

Exceptions

TransformerException:: if a error occurs creating the Expression.

setNamespaceContext

back to summary

public void setNamespaceContext(PrefixResolver pr)

Set the current namespace context for the xpath.

Parameters

pr:PrefixResolver: The resolver for prefixes in the XPath expression.

stepPattern back to summary

protected StepPattern stepPattern(int opPos, int stepCount, StepPattern ancestorPattern) throws TransformerException

Compile a step pattern unit expression, used for both location paths and match patterns.

Parameters

opPos:int: The current position in the m_opMap array.
stepCount:int: The number of steps to expect.
ancestorPattern:StepPattern: The owning StepPattern, which may be null.

Returns:StepPattern

reference to com.sun.org.apache.xpath.internal.patterns.StepPattern instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

string back to summary

protected Expression string(int opPos) throws TransformerException

Compile a 'string(...)' operation.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.String instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

union back to summary

protected Expression union(int opPos) throws TransformerException

Compile a location path union. The UnionPathIterator itself may create com.sun.org.apache.xpath.internal.axes.LocPathIterator children.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.axes.LocPathIterator instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

variable back to summary

protected Expression variable(int opPos) throws TransformerException

Compile a variable reference.

Parameters

opPos:int: The current position in the m_opMap array.

Returns:Expression

reference to com.sun.org.apache.xpath.internal.operations.Variable instance.

Exceptions

TransformerException:: if a error occurs creating the Expression.

warn back to summary

public void warn(String msg, Object[] args) throws TransformerException

Warn the user of an problem.

Parameters

msg:String: An error msgkey that corresponds to one of the constants found in com.sun.org.apache.xpath.internal.res.XPATHErrorResources, which is a key for a format string.
args:Object[]: An array of arguments represented in the format string, which may be null.

Exceptions

TransformerException:: if the current ErrorListoner determines to throw an exception.

public Class Compiler

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