Java Doc for QueryParser.java in  » Workflow-Engines » pegasus-2.1.0 » org » griphyn » vdl » annotation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » pegasus 2.1.0 » org.griphyn.vdl.annotation   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.griphyn.vdl.annotation.QueryParser QueryParser public class QueryParser (Code) Parses the input stream and generates a query tree as output. author:    Jens-S. Vöckler author:    Yong Zhao version:    $Revision: 50 $ See Also:   QueryScanner See Also:   QueryTree Constructor Summary public   QueryParser(java.io.Reader r)      Initializes the parser with an input stream to read from. Method Summary public  QueryTree atom()      protected  boolean checkDate(String value)      protected  int checkNumber(String value)      check a string to see whether it represents a integer or float value. protected  int checkString(String value)      public  QueryTree expression()      public static  void main(String[] args)      The main function to test the parser. public  QueryTree parse()      protected  Predicate predicates()      Constructor Detail QueryParser public QueryParser(java.io.Reader r) throws IOException, QueryParserException(Code) Initializes the parser with an input stream to read from. Parameters:   r - is the stream opened for reading. Method Detail atom public QueryTree atom() throws IOException, QueryParserException(Code) Parses the atoms of the query statement checkDate protected boolean checkDate(String value)(Code) check a string to see whether it represents a date value checkNumber protected int checkNumber(String value)(Code) check a string to see whether it represents a integer or float value. checkString protected int checkString(String value)(Code) check a string and guess the type of the attribute from its value expression public QueryTree expression() throws IOException, QueryParserException(Code) Parses the expressions of the query statement main public static void main(String[] args) throws IOException, QueryParserException(Code) The main function to test the parser. parse public QueryTree parse() throws IOException, QueryParserException(Code) Parses the query stream the root node to the parsed query tree predicates protected Predicate predicates() throws IOException, QueryParserException(Code) Parses predicates and returns the corresponding Predicate objects 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)