接口 ValueStack：com.opensymphony.xwork2.util

字段详细资料

• REPORT_ERRORS_ON_NO_PROP

  static final java.lang.String REPORT_ERRORS_ON_NO_PROP

  另请参阅:

  常量字段值

方法详细资料

• setDefaultType

  void setDefaultType(java.lang.Class defaultType)

  Sets the default type to convert to if no type is provided when getting a value.

  参数:

  defaultType - the new default type

• setExprOverrides

  void setExprOverrides(java.util.Map<java.lang.Object,java.lang.Object> overrides)

  Set a override map containing  key -> values that takes precedent when doing find operations on the ValueStack.

  See the unit test for ValueStackTest for examples.

  参数:

  overrides - overrides map.

• getExprOverrides

  java.util.Map<java.lang.Object,java.lang.Object> getExprOverrides()

  Gets the override map if anyone exists.

  返回:

  the override map,  null if not set.

• getRoot

  CompoundRoot getRoot()

  Get the CompoundRoot which holds the objects pushed onto the stack

  返回:

  the root

• setValue

  void setValue(java.lang.String expr,java.lang.Object value)

  Attempts to set a property on a bean in the stack with the given expression using the default search order.

  参数:

  expr - the expression defining the path to the property to be set.

  value - the value to be set into the named property

• setValue

  void setValue(java.lang.String expr,java.lang.Object value,boolean throwExceptionOnFailure)

  Attempts to set a property on a bean in the stack with the given expression using the default search order.

  参数:

  expr - the expression defining the path to the property to be set.

  value - the value to be set into the named property

  throwExceptionOnFailure - a flag to tell whether an exception should be thrown if there is no property with the given name.

• findString

  java.lang.String findString(java.lang.String expr)

• findString

  java.lang.String findString(java.lang.String expr,boolean throwExceptionOnFailure)

• findValue

  java.lang.Object findValue(java.lang.String expr)

  Find a value by evaluating the given expression against the stack in the default search order.

  参数:

  expr - the expression giving the path of properties to navigate to find the property value to return

  返回:

  the result of evaluating the expression

• findValue

  java.lang.Object findValue(java.lang.String expr,boolean throwExceptionOnFailure)

• findValue

  java.lang.Object findValue(java.lang.String expr,java.lang.Class asType)

  Find a value by evaluating the given expression against the stack in the default search order.

  参数:

  expr - the expression giving the path of properties to navigate to find the property value to return

  asType - the type to convert the return value to

  返回:

  the result of evaluating the expression

• findValue

  java.lang.Object findValue(java.lang.String expr,java.lang.Class asType,boolean throwExceptionOnFailure)

• peek

  java.lang.Object peek()

  Get the object on the top of the stack  without changing the stack.

  返回:

  the object on the top.

  另请参阅:

  CompoundRoot.peek()

• pop

  java.lang.Object pop()

  Get the object on the top of the stack and  remove it from the stack.

  返回:

  the object on the top of the stack

  另请参阅:

  CompoundRoot.pop()

• push

  void push(java.lang.Object o)

  Put this object onto the top of the stack

  参数:

  o - the object to be pushed onto the stack

  另请参阅:

  CompoundRoot.push(Object)

• set

  void set(java.lang.String key,java.lang.Object o)

  Sets an object on the stack with the given key so it is retrievable by  findValue(String),  findValue(String, Class)

  参数:

  key - the key

  o - the object

• size

  int size()

  Get the number of objects in the stack

  返回:

  the number of objects in the stack