Package org.apache.commons.beanutils2

Class BasicDynaBean

java.lang.Object
org.apache.commons.beanutils2.BasicDynaBean
All Implemented Interfaces:
DynaBean
public class BasicDynaBean extends Object implements DynaBean

Minimal implementation of the DynaBean interface. Can be used as a convenience base class for more sophisticated implementations.

IMPLEMENTATION NOTE - Instances of this class that are accessed from multiple threads simultaneously need to be synchronized.

IMPLEMENTATION NOTE - Instances of this class can be successfully serialized and deserialized ONLY if all property values are Serializable.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected DynaClass
    dynaClass
    The DynaClass "base class" that this DynaBean is associated with.
    protected HashMap<String,Object>
    values
    The set of property values for this DynaBean, keyed by property name.

  • Constructor Summary

    Constructors
    Constructor
    Description
    BasicDynaBean(DynaClass dynaClass)
    Constructs a new DynaBean associated with the specified DynaClass instance.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    contains(String name, String key)
    Does the specified mapped property contain a value for the specified key value?
    Object
    get(String name)
    Gets the value of a simple property with the specified name.
    Object
    get(String name, int index)
    Gets the value of an indexed property with the specified name.
    Object
    get(String name, String key)
    Gets the value of a mapped property with the specified name, or null if there is no value for the specified key.
    DynaClass
    getDynaClass()
    Gets the DynaClass instance that describes the set of properties available for this DynaBean.
    protected DynaProperty
    getDynaProperty(String name)
    Gets the property descriptor for the specified property name.
    Map<String,Object>
    getMap()
    Gets a Map representation of this DynaBean.
    protected boolean
    isAssignable(Class<?> dest, Class<?> source)
    Is an object of the source class assignable to the destination class?
    void
    remove(String name, String key)
    Remove any existing value for the specified key on the specified mapped property.
    void
    set(String name, int index, Object value)
    Sets the value of an indexed property with the specified name.
    void
    set(String name, Object value)
    Sets the value of a simple property with the specified name.
    void
    set(String name, String key, Object value)
    Sets the value of a mapped property with the specified name.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • dynaClass

      protected DynaClass dynaClass
      The DynaClass "base class" that this DynaBean is associated with.

    • values

      protected HashMap<String,Object> values
      The set of property values for this DynaBean, keyed by property name.

  • Constructor Details

    • BasicDynaBean

      public BasicDynaBean(DynaClass dynaClass)
      Constructs a new DynaBean associated with the specified DynaClass instance.
      Parameters:
      dynaClass - The DynaClass we are associated with

  • Method Details

    • contains

      public boolean contains(String name, String key)
      Does the specified mapped property contain a value for the specified key value?
      Specified by:
      contains in interface DynaBean
      Parameters:
      name - Name of the property to check
      key - Name of the key to check
      Returns:
      true if the mapped property contains a value for the specified key, otherwise false
      Throws:
      IllegalArgumentException - if there is no property of the specified name

    • get

      public Object get(String name)
      Gets the value of a simple property with the specified name.
      Specified by:
      get in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be retrieved
      Returns:
      The property's value
      Throws:
      IllegalArgumentException - if there is no property of the specified name

    • get

      public Object get(String name, int index)
      Gets the value of an indexed property with the specified name.
      Specified by:
      get in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be retrieved
      index - Index of the value to be retrieved
      Returns:
      The indexed property's value
      Throws:
      IllegalArgumentException - if there is no property of the specified name
      IllegalArgumentException - if the specified property exists, but is not indexed
      IndexOutOfBoundsException - if the specified index is outside the range of the underlying property
      NullPointerException - if no array or List has been initialized for this property

    • get

      public Object get(String name, String key)
      Gets the value of a mapped property with the specified name, or null if there is no value for the specified key.
      Specified by:
      get in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be retrieved
      key - Key of the value to be retrieved
      Returns:
      The mapped property's value
      Throws:
      IllegalArgumentException - if there is no property of the specified name
      IllegalArgumentException - if the specified property exists, but is not mapped

    • getDynaClass

      public DynaClass getDynaClass()
      Gets the DynaClass instance that describes the set of properties available for this DynaBean.
      Specified by:
      getDynaClass in interface DynaBean
      Returns:
      The associated DynaClass

    • getDynaProperty

      protected DynaProperty getDynaProperty(String name)
      Gets the property descriptor for the specified property name.
      Parameters:
      name - Name of the property for which to retrieve the descriptor
      Returns:
      The property descriptor
      Throws:
      IllegalArgumentException - if this is not a valid property name for our DynaClass

    • getMap

      public Map<String,Object> getMap()

      Gets a Map representation of this DynaBean.

      This, for example, could be used in JSTL in the following way to access a DynaBean's fooProperty:

      • ${myDynaBean.<strong>map</strong>.fooProperty}
      Returns:
      a Map representation of this DynaBean
      Since:
      1.8.0

    • isAssignable

      protected boolean isAssignable(Class<?> dest, Class<?> source)
      Is an object of the source class assignable to the destination class?
      Parameters:
      dest - Destination class
      source - Source class
      Returns:
      true if the source class is assignable to the destination class, otherwise false

    • remove

      public void remove(String name, String key)
      Remove any existing value for the specified key on the specified mapped property.
      Specified by:
      remove in interface DynaBean
      Parameters:
      name - Name of the property for which a value is to be removed
      key - Key of the value to be removed
      Throws:
      IllegalArgumentException - if there is no property of the specified name

    • set

      public void set(String name, int index, Object value)
      Sets the value of an indexed property with the specified name.
      Specified by:
      set in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be set
      index - Index of the property to be set
      value - Value to which this property is to be set
      Throws:
      ConversionException - if the specified value cannot be converted to the type required for this property
      IllegalArgumentException - if there is no property of the specified name
      IllegalArgumentException - if the specified property exists, but is not indexed
      IndexOutOfBoundsException - if the specified index is outside the range of the underlying property

    • set

      public void set(String name, Object value)
      Sets the value of a simple property with the specified name.
      Specified by:
      set in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be set
      value - Value to which this property is to be set
      Throws:
      ConversionException - if the specified value cannot be converted to the type required for this property
      IllegalArgumentException - if there is no property of the specified name
      NullPointerException - if an attempt is made to set a primitive property to null

    • set

      public void set(String name, String key, Object value)
      Sets the value of a mapped property with the specified name.
      Specified by:
      set in interface DynaBean
      Parameters:
      name - Name of the property whose value is to be set
      key - Key of the property to be set
      value - Value to which this property is to be set
      Throws:
      ConversionException - if the specified value cannot be converted to the type required for this property
      IllegalArgumentException - if there is no property of the specified name
      IllegalArgumentException - if the specified property exists, but is not mapped