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Java Source Code / Java Documentation » Database ORM » openjpa » org.apache.openjpa.jdbc.kernel.exps   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.openjpa.jdbc.kernel.exps.AbstractVal       org.apache.openjpa.jdbc.kernel.exps.Variable Variable class Variable extends AbstractVal (Code) A variable in a filter. Typically, the Variable.initialize and Variable.getJoins methods of this value are not called. They are only called if the variable is bound but otherwise unused in the filter, in which case we must at least make the joins to the variable because the act of binding a variable should at least guarantee that an instance represting the variable could exist (i.e. the binding collection is not empty). author:    Abe White Constructor Summary public   Variable(String name, Class type)      Constructor. Method Summary public  void acceptVisit(ExpressionVisitor visitor)      public  void appendIsEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)      public  void appendIsNotEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)      public  void appendIsNotNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)      public  void appendIsNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)      public  void appendSize(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)      public  void appendTo(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql, int index)      public  void calculateValue(Select sel, ExpContext ctx, ExpState state, Val other, ExpState otherState)      public  ClassMetaData getMetaData()      public  String getName()      Return the variable name. public  PCPath getPCPath()      Return the path this variable is aliased to. public  Class getType()      public  void groupBy(Select sel, ExpContext ctx, ExpState state)      public  ExpState initialize(Select sel, ExpContext ctx, int flags)      public  boolean isBound()      Return true if the variable is bound. public  boolean isVariable()      public  int length(Select sel, ExpContext ctx, ExpState state)      public  Object load(ExpContext ctx, ExpState state, Result res)      public  void orderBy(Select sel, ExpContext ctx, ExpState state, boolean asc)      public  void select(Select sel, ExpContext ctx, ExpState state, boolean pks)      public  void selectColumns(Select sel, ExpContext ctx, ExpState state, boolean pks)      public  void setImplicitType(Class type)      public  void setMetaData(ClassMetaData meta)      public  void setPCPath(PCPath path)      Set the path this variable is aliased to. Constructor Detail Variable public Variable(String name, Class type)(Code) Constructor. Supply variable name and type. Method Detail acceptVisit public void acceptVisit(ExpressionVisitor visitor)(Code) appendIsEmpty public void appendIsEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)(Code) appendIsNotEmpty public void appendIsNotEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)(Code) appendIsNotNull public void appendIsNotNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)(Code) appendIsNull public void appendIsNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)(Code) appendSize public void appendSize(Select sel, ExpContext ctx, ExpState state, SQLBuffer buf)(Code) appendTo public void appendTo(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql, int index)(Code) calculateValue public void calculateValue(Select sel, ExpContext ctx, ExpState state, Val other, ExpState otherState)(Code) getMetaData public ClassMetaData getMetaData()(Code) getName public String getName()(Code) Return the variable name. getPCPath public PCPath getPCPath()(Code) Return the path this variable is aliased to. getType public Class getType()(Code) groupBy public void groupBy(Select sel, ExpContext ctx, ExpState state)(Code) initialize public ExpState initialize(Select sel, ExpContext ctx, int flags)(Code) isBound public boolean isBound()(Code) Return true if the variable is bound. isVariable public boolean isVariable()(Code) length public int length(Select sel, ExpContext ctx, ExpState state)(Code) load public Object load(ExpContext ctx, ExpState state, Result res) throws SQLException(Code) orderBy public void orderBy(Select sel, ExpContext ctx, ExpState state, boolean asc)(Code) select public void select(Select sel, ExpContext ctx, ExpState state, boolean pks)(Code) selectColumns public void selectColumns(Select sel, ExpContext ctx, ExpState state, boolean pks)(Code) setImplicitType public void setImplicitType(Class type)(Code) setMetaData public void setMetaData(ClassMetaData meta)(Code) setPCPath public void setPCPath(PCPath path)(Code) Set the path this variable is aliased to. Fields inherited from org.apache.openjpa.jdbc.kernel.exps.AbstractVal final protected static String FALSE(Code)(Java Doc) final protected static String TRUE(Code)(Java Doc) Methods inherited from org.apache.openjpa.jdbc.kernel.exps.AbstractVal public void acceptVisit(ExpressionVisitor visitor)(Code)(Java Doc) public void appendIsEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)(Code)(Java Doc) public void appendIsNotEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)(Code)(Java Doc) public void appendIsNotNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)(Code)(Java Doc) public void appendIsNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)(Code)(Java Doc) public void appendSize(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)(Code)(Java Doc) public boolean isAggregate()(Code)(Java Doc) public boolean isVariable()(Code)(Java Doc) public boolean isXPath()(Code)(Java Doc) public Object toDataStoreValue(Select sel, ExpContext ctx, ExpState state, Object val)(Code)(Java Doc) 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)