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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.xpath   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.caucho.xpath.Expr All known Subclasses:   com.caucho.xpath.expr.FunExpr,  com.caucho.xpath.expr.StaticJavaExpr,  com.caucho.xpath.expr.VarExpr,  com.caucho.xpath.expr.IdExpr,  com.caucho.xpath.expr.NewJavaExpr,  com.caucho.xpath.expr.AbstractNumberExpr,  com.caucho.xpath.expr.BooleanExpr,  com.caucho.xpath.expr.NodeSetExpr,  com.caucho.xpath.expr.NumericExpr,  com.caucho.xpath.expr.AbstractStringExpr,  com.caucho.xpath.expr.ObjectJavaExpr,  com.caucho.xpath.expr.ObjectExpr,  com.caucho.xpath.expr.StringExpr, Expr abstract public class Expr (Code) Compute values from nodes. Because the expressions themselves are untyped, the class provides methods for creating the type of the desired result. Field Summary final protected static  int ADD      final protected static  int AND      final protected static  int ATTRIBUTE      final protected static  int BASE_URI      final protected static  int BOOLEAN      final protected static  int BOOLEAN_EQ      final protected static  int BOOLEAN_NEQ      final protected static  int CEILING      final protected static  int CONCAT      final protected static  int CONST      final protected static  int CONTAINS      final protected static  int COUNT      final protected static  int DIV      final protected static  int ELEMENT      final protected static  int EQ      final protected static  int FALSE      final protected static  int FLOOR      final protected static  int FORMAT_NUMBER      final protected static  int FUNCTION_AVAILABLE      final protected static  int GE      final protected static  int GENERATE_ID      final protected static  int GT      final protected static  int ID      final protected static  int IF      final protected static  int LANG      final protected static  int LAST      final protected static  int LAST_FUN      final protected static  int LE      final protected static  int LOCAL_PART      final protected static  int LT      final protected static  int MOD      final protected static  int MUL      final protected static  int NAMESPACE      final protected static  int NEG      final protected static  int NEQ      final protected static  int NODE_SET      final protected static  int NORMALIZE      final protected static  int NOT      final protected static  int NUMBER      final protected static  int NUMBER_EQ      final protected static  int NUMBER_GE      final protected static  int NUMBER_GT      final protected static  int NUMBER_LE      final protected static  int NUMBER_LT      final protected static  int NUMBER_NEQ      final protected static  int OR      final public static  int POSITION      final protected static  int QNAME      final protected static  int QUO      final protected static  int ROUND      final protected static  int SELF      final protected static  int SELF_NAME      final protected static  int STARTS_WITH      final protected static  int STRING      final protected static  int STRING_EQ      final protected static  int STRING_LENGTH      final protected static  int STRING_NEQ      final protected static  int SUB      final protected static  int SUBSTRING      final protected static  int SUBSTRING_AFTER      final protected static  int SUBSTRING_BEFORE      final protected static  int SUM      final protected static  int SYSTEM_PROPERTY      final protected static  int TRANSLATE      final protected static  int TRUE      Constructor Summary protected   Expr()      Method Summary public  void addParam(Env newEnv, String name, Node node, Env env)      Adds a param with the expression's value. public  void addVar(Env newEnv, String name, Node node, Env env)      Adds a variable with the expression's value. public  boolean evalBoolean(Node node)      Returns the boolean value of the node. abstract public  boolean evalBoolean(Node node, ExprEnvironment env)      Returns the boolean value of the node. Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. public  NodeIterator evalNodeSet(Node node)      public  NodeIterator evalNodeSet(Node node, ExprEnvironment env)      Returns an iterator of matching nodes Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. public  double evalNumber(Node node)      Evaluates the expression as a double using the node as a context. abstract public  double evalNumber(Node node, ExprEnvironment env)      Evaluates the expression as a number. Parameters:   node - the current node. Parameters:   env - variable environment. public  Object evalObject(Node node)      Returns the object value of the node. abstract public  Object evalObject(Node node, ExprEnvironment env)      Returns the object value of the node. public  String evalString(Node node)      Returns the expression evaluated as a string. abstract public  String evalString(Node node, ExprEnvironment env)      Returns the string value of the node. public  void evalString(CharBuffer cb, Node node)      Fills a char buffer with the evaluated string results. public  void evalString(CharBuffer cb, Node node, ExprEnvironment env)      Fills a char buffer with the evaluated string results. public  Var evalVar(Node node, ExprEnvironment env)      Evaluates to a variable. Parameters:   node - the node to evaluate and use as a context. Parameters:   env - the variable environment. public  AbstractPattern getListContext()      public  boolean isBoolean()      true if the expression prefers to return a boolean. public  boolean isNodeSet()      true if the expression prefers to return a node set. public  boolean isNumber()      true if the expression prefers to return a number. public  boolean isString()      true if the expression prefers to return a string. public  void setListContext(AbstractPattern listContext)      public  void setVar(String name, Node node, Env env)      Sets a variable with the expression's value. protected static  double stringToNumber(String string)      Convert a string to a double following XPath. Parameters:   string - string to be treated as a double. public static  boolean toBoolean(Object value)      Convert a Java object to a boolean using the XPath rules. public static  double toDouble(Object value)      Convert a Java object to a double using the XPath rules. public static  Node toNode(Object value)      Convert a Java object to a node using the XPath rules. protected  AbstractPattern toNodeList()      Convert from an expression to a pattern. public static  String toString(Object value)      Convert a Java object to a string using the XPath rules. Field Detail ADD final protected static int ADD(Code) AND final protected static int AND(Code) ATTRIBUTE final protected static int ATTRIBUTE(Code) BASE_URI final protected static int BASE_URI(Code) BOOLEAN final protected static int BOOLEAN(Code) BOOLEAN_EQ final protected static int BOOLEAN_EQ(Code) BOOLEAN_NEQ final protected static int BOOLEAN_NEQ(Code) CEILING final protected static int CEILING(Code) CONCAT final protected static int CONCAT(Code) CONST final protected static int CONST(Code) CONTAINS final protected static int CONTAINS(Code) COUNT final protected static int COUNT(Code) DIV final protected static int DIV(Code) ELEMENT final protected static int ELEMENT(Code) EQ final protected static int EQ(Code) FALSE final protected static int FALSE(Code) FLOOR final protected static int FLOOR(Code) FORMAT_NUMBER final protected static int FORMAT_NUMBER(Code) FUNCTION_AVAILABLE final protected static int FUNCTION_AVAILABLE(Code) GE final protected static int GE(Code) GENERATE_ID final protected static int GENERATE_ID(Code) GT final protected static int GT(Code) ID final protected static int ID(Code) IF final protected static int IF(Code) LANG final protected static int LANG(Code) LAST final protected static int LAST(Code) LAST_FUN final protected static int LAST_FUN(Code) LE final protected static int LE(Code) LOCAL_PART final protected static int LOCAL_PART(Code) LT final protected static int LT(Code) MOD final protected static int MOD(Code) MUL final protected static int MUL(Code) NAMESPACE final protected static int NAMESPACE(Code) NEG final protected static int NEG(Code) NEQ final protected static int NEQ(Code) NODE_SET final protected static int NODE_SET(Code) NORMALIZE final protected static int NORMALIZE(Code) NOT final protected static int NOT(Code) NUMBER final protected static int NUMBER(Code) NUMBER_EQ final protected static int NUMBER_EQ(Code) NUMBER_GE final protected static int NUMBER_GE(Code) NUMBER_GT final protected static int NUMBER_GT(Code) NUMBER_LE final protected static int NUMBER_LE(Code) NUMBER_LT final protected static int NUMBER_LT(Code) NUMBER_NEQ final protected static int NUMBER_NEQ(Code) OR final protected static int OR(Code) POSITION final public static int POSITION(Code) QNAME final protected static int QNAME(Code) QUO final protected static int QUO(Code) ROUND final protected static int ROUND(Code) SELF final protected static int SELF(Code) SELF_NAME final protected static int SELF_NAME(Code) STARTS_WITH final protected static int STARTS_WITH(Code) STRING final protected static int STRING(Code) STRING_EQ final protected static int STRING_EQ(Code) STRING_LENGTH final protected static int STRING_LENGTH(Code) STRING_NEQ final protected static int STRING_NEQ(Code) SUB final protected static int SUB(Code) SUBSTRING final protected static int SUBSTRING(Code) SUBSTRING_AFTER final protected static int SUBSTRING_AFTER(Code) SUBSTRING_BEFORE final protected static int SUBSTRING_BEFORE(Code) SUM final protected static int SUM(Code) SYSTEM_PROPERTY final protected static int SYSTEM_PROPERTY(Code) TRANSLATE final protected static int TRANSLATE(Code) TRUE final protected static int TRUE(Code) Constructor Detail Expr protected Expr()(Code) Method Detail addParam public void addParam(Env newEnv, String name, Node node, Env env) throws XPathException(Code) Adds a param with the expression's value. addVar public void addVar(Env newEnv, String name, Node node, Env env) throws XPathException(Code) Adds a variable with the expression's value. evalBoolean public boolean evalBoolean(Node node) throws XPathException(Code) Returns the boolean value of the node. Parameters:   node - the node to evaluate and use as a context the boolean value evalBoolean abstract public boolean evalBoolean(Node node, ExprEnvironment env) throws XPathException(Code) Returns the boolean value of the node. Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. the boolean value. evalNodeSet public NodeIterator evalNodeSet(Node node) throws XPathException(Code) Returns an iterator of matching nodes Parameters:   node - the node to evaluate and use as a context the value as a node iterator. evalNodeSet public NodeIterator evalNodeSet(Node node, ExprEnvironment env) throws XPathException(Code) Returns an iterator of matching nodes Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. the value as a node iterator. evalNumber public double evalNumber(Node node) throws XPathException(Code) Evaluates the expression as a double using the node as a context. Parameters:   node - the node to evaluate and use as a context the numeric value. evalNumber abstract public double evalNumber(Node node, ExprEnvironment env) throws XPathException(Code) Evaluates the expression as a number. Parameters:   node - the current node. Parameters:   env - variable environment. the numeric value. evalObject public Object evalObject(Node node) throws XPathException(Code) Returns the object value of the node. Parameters:   node - the node to evaluate and use as a context evalObject abstract public Object evalObject(Node node, ExprEnvironment env) throws XPathException(Code) Returns the object value of the node. Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. evalString public String evalString(Node node) throws XPathException(Code) Returns the expression evaluated as a string. Parameters:   node - the node to evaluate and use as a context the string value of the expression. evalString abstract public String evalString(Node node, ExprEnvironment env) throws XPathException(Code) Returns the string value of the node. Parameters:   node - the node to evaluate and use as a context Parameters:   env - variable environment. evalString public void evalString(CharBuffer cb, Node node) throws XPathException(Code) Fills a char buffer with the evaluated string results. Parameters:   cb - the buffer containing the results. Parameters:   node - the node to evaluate and use as a context evalString public void evalString(CharBuffer cb, Node node, ExprEnvironment env) throws XPathException(Code) Fills a char buffer with the evaluated string results. Parameters:   cb - the buffer containing the results. Parameters:   node - the node to evaluate and use as a context Parameters:   env - the variable environment evalVar public Var evalVar(Node node, ExprEnvironment env) throws XPathException(Code) Evaluates to a variable. Parameters:   node - the node to evaluate and use as a context. Parameters:   env - the variable environment. a variable containing the value. getListContext public AbstractPattern getListContext()(Code) isBoolean public boolean isBoolean()(Code) true if the expression prefers to return a boolean. isNodeSet public boolean isNodeSet()(Code) true if the expression prefers to return a node set. isNumber public boolean isNumber()(Code) true if the expression prefers to return a number. isString public boolean isString()(Code) true if the expression prefers to return a string. setListContext public void setListContext(AbstractPattern listContext)(Code) setVar public void setVar(String name, Node node, Env env) throws XPathException(Code) Sets a variable with the expression's value. stringToNumber protected static double stringToNumber(String string) throws XPathException(Code) Convert a string to a double following XPath. Parameters:   string - string to be treated as a double. the double value. toBoolean public static boolean toBoolean(Object value) throws XPathException(Code) Convert a Java object to a boolean using the XPath rules. toDouble public static double toDouble(Object value) throws XPathException(Code) Convert a Java object to a double using the XPath rules. toNode public static Node toNode(Object value) throws XPathException(Code) Convert a Java object to a node using the XPath rules. toNodeList protected AbstractPattern toNodeList()(Code) Convert from an expression to a pattern. toString public static String toString(Object value) throws XPathException(Code) Convert a Java object to a string using the XPath rules. Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)