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## weblogic.common
Class ParamValue

    java.lang.Object
      weblogic.common.ParamValue

All Implemented Interfaces:
  Externalizable, Serializable, Cloneable

    public final class ParamValue

extends Object
implements Cloneable, Externalizable

A ParamValue is the value part of a name/value pair used for events and remote procedures.

A ParamSet has keynames, and each keyname has a ParamValue associated with it. A ParamValue may be made up of a vector of ParamValues, in which case the elements in the vector are accessible by index position.

The variables in this class are used for setting attributes for IN, OUT and IN/OUT parameters used for database stored procedures.

Conversions among the various datatypes are handled automatically in a "Java" way, i.e., the conversion can be accomplished either of these ways:

- With a cast. For example, for float --> int, you might use:

        float f = 1.2;
         int i = (int) f;

- By using some java.* method for the conversion. For example, you might use:

        boolean b = Boolean.booleanValue("t");

Illegal conversions (for example, int to boolean) throw a ParamSetException.

See Also:
  `ParamSet`, Serialized Form

Field Summary
`protected String` | `paramDesc` Variable used for IN, OUT, and IN/OUT parameters to set the descriptor of the parameter.
`protected int` | `paramMode` Variable used for IN, OUT, and IN/OUT parameters to set the mode of the parameter.
`protected String` | `paramName` Variable used for IN, OUT, and IN/OUT parameters to set the name of the parameter.
`protected int` | `paramType` Variable used for IN, OUT, and IN/OUT parameters to set the type of the parameter.

Constructor Summary
`ParamValue()` Internal use only.
`ParamValue(String name, int datatype, int inouttype, String paramDesc)` Constructs a ParamValue with the specified name, of the specified data type, of the specified parameter type, and of the specified parameter description.

Method Summary
`boolean` | `asBoolean()` Returns a ParamValue as a boolean.
`byte` | `asByte()` Returns a ParamValue as a byte.
`char` | `asChar()` Returns a ParamValue as a char.
`Date` | `asDate()` Returns a ParamValue as a Date.
`double` | `asDouble()` Returns a ParamValue as a double.
`float` | `asFloat()` Returns a ParamValue as a float.
`int` | `asInt()` Returns a ParamValue as a int.
`long` | `asLong()` Returns a ParamValue as a long.
`Object` | `asObject()` Returns a ParamValue as an Object.
`short` | `asShort()` Returns a ParamValue as a short.
`String` | `asString()` Returns a ParamValue as a String.
`Object` | `clone()` Clones a ParamValue.
`void` | `destroy()` Destroys a ParamValue object.
`String` | `dump()` Returns a formatted string representation of a ParamValue.
`ParamValue` | `elementAt(int index)` Used for accessing ParamValues in a Vector of ParamValues.
`void` | `initialize()` Initializes a ParamValue.
`boolean` | `isBoolean()` Determines whether a ParamValue is of type boolean.
`boolean` | `isByte()` Determines whether a ParamValue is of type byte.
`boolean` | `isChar()` Determines whether a ParamValue is of type char.
`boolean` | `isDate()` Determines whether a ParamValue is of type Date.
`boolean` | `isDouble()` Determines whether a ParamValue is of type double.
`boolean` | `isFloat()` Determines whether a ParamValue is of type float.
`boolean` | `isInt()` Determines whether a ParamValue is of type int.
`boolean` | `isLong()` Determines whether a ParamValue is of type long.
`boolean` | `isNull()` Determines whether a ParamValue is null.
`boolean` | `isNull(int index)` Determines whether a ParamValue that is a vector of ParamValues is null at the specified index position.
`boolean` | `isObject()` Determines whether a ParamValue is of type Object.
`boolean` | `isScalar()` Determines whether a ParamValue is scalar.
`boolean` | `isShort()` Determines whether a ParamValue is of type short.
`boolean` | `isString()` Determines whether a ParamValue is of type String.
`boolean` | `isVector()` Determines whether a ParamValue is a Vector.
`String` | `name()` Returns the paramName of a ParamValue.
`String` | `paramDesc()` Returns the paramDesc of a ParamValue.
`int` | `paramMode()` Returns the paramMode of a ParamValue.
`String` | `paramModeString()` Returns the paramMode of a ParamValue as a String.
`int` | `paramType()` Returns the paramType of a ParamValue.
`String` | `paramTypeString()` Returns the paramType of a ParamValue as a String.
`void` | `readExternal(ObjectInput oi)` Constructs a ParamValue from the specified serialization stream
`ParamValue` | `set(boolean val)` Sets the value of a ParamValue to a boolean.
`ParamValue` | `set(boolean val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified boolean.
`ParamValue` | `set(byte val)` Sets the value of a ParamValue to a byte.
`ParamValue` | `set(char val)` Sets the value of a ParamValue to a char.
`ParamValue` | `set(char val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified char.
`ParamValue` | `set(Date val)` Sets the value of a ParamValue to a Date.
`ParamValue` | `set(Date val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified date.
`ParamValue` | `set(double val)` Sets the value of a ParamValue to a double.
`ParamValue` | `set(double val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified double.
`ParamValue` | `set(float val)` Sets the value of a ParamValue to a float.
`ParamValue` | `set(float val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified float.
`ParamValue` | `set(int val)` Sets the value of a ParamValue to an int.
`ParamValue` | `set(int val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified int.
`ParamValue` | `set(long val)` Sets the value of a ParamValue to a long.
`ParamValue` | `set(long val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified long.
`ParamValue` | `set(Object val)` Sets the value of a ParamValue to an Object.
`ParamValue` | `set(Object val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified Object.
`ParamValue` | `set(ParamValue val)` Sets the value of a ParamValue to a ParamValue.
`ParamValue` | `set(ParamValue val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified ParamValue.
`ParamValue` | `set(short val)` Sets the value of a ParamValue to a short.
`ParamValue` | `set(short val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified integer.
`ParamValue` | `set(String val)` Sets the value of a ParamValue to a String.
`ParamValue` | `set(String val, int index)` Sets the value at the specified index into a Vector of ParamValues to the specified string.
`void` | `setElementAt(Object value, int index)` Sets the element at the specified index into Vector of ParamValues to the specified value.
`int` | `size()` Returns the size of a Vector of ParamValues.
`String` | `toString()` Returns a string representation of a ParamValue.
`void` | `writeExternal(ObjectOutput oo)` Writes a ParamValue object to a serialization stream.

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### paramName

    protected String paramName

  Variable used for IN, OUT, and IN/OUT parameters to set the name of the parameter. Default is null.

### paramDesc

    protected String paramDesc

  Variable used for IN, OUT, and IN/OUT parameters to set the descriptor of the parameter. Default is null.

### paramType

    protected int paramType

  Variable used for IN, OUT, and IN/OUT parameters to set the type of the parameter. Default is ParamTypes.NOTYPE.

  See Also:
    `ParamTypes`

### paramMode

    protected int paramMode

  Variable used for IN, OUT, and IN/OUT parameters to set the mode of the parameter. Default is ParamTypes.IN.

  See Also:
    `ParamTypes`

Constructor Detail

### ParamValue

    public ParamValue()

  Internal use only.

### ParamValue

    public ParamValue(String name,
                      int datatype,
                      int inouttype,
                      String paramDesc)

  Constructs a ParamValue with the specified name, of the specified data type, of the specified parameter type, and of the specified parameter description.

  Parameters:
    `name` - Name
    `datatype` - Data type from weblogic.common.ParamTypes
    `inouttype` - Mode from weblogic.common.ParamTypes (IN, IN/OUT, OUT)
    `paramDesc` - Description
  See Also:
    `ParamTypes`

Method Detail

### initialize

    public void initialize()

  Initializes a ParamValue. Sets the variables paramName and paramDesc to null; sets the variable paramType to ParamTypes.NOTYPE; and sets the variable paramMode to ParamTypes.IN.

### destroy

    public void destroy()

  Destroys a ParamValue object.

### clone

    public Object clone()

  Clones a ParamValue. The clone is shallow, that is the "value" contained in the ParamValue is not cloned unless it is a Vector.

  Overrides:
    `clone` in class `Object`

### readExternal

    public void readExternal(ObjectInput oi)
                      throws IOException

  Constructs a ParamValue from the specified serialization stream

  Specified by:
    `readExternal` in interface `Externalizable`
  Parameters:
    `in` - WLObjectInput
  Throws:
    `IOException` - if there is an IO error

### writeExternal

    public void writeExternal(ObjectOutput oo)
                       throws IOException

  Writes a ParamValue object to a serialization stream.

  Specified by:
    `writeExternal` in interface `Externalizable`
  Throws:
    `IOException`

### name

    public String name()

  Returns the paramName of a ParamValue.

  Returns:
    String

### paramDesc

    public String paramDesc()

  Returns the paramDesc of a ParamValue.

  Returns:
    Parameter description

### paramType

    public int paramType()

  Returns the paramType of a ParamValue.

  Returns:
    int
  See Also:
    `ParamTypes`

### paramTypeString

    public String paramTypeString()

  Returns the paramType of a ParamValue as a String.

  Returns:
    Data type as a String

### paramModeString

    public String paramModeString()

  Returns the paramMode of a ParamValue as a String.

  Returns:
    Mode as a String

### isNull

    public boolean isNull(int index)

  Determines whether a ParamValue that is a vector of ParamValues is null at the specified index position.

  Parameters:
    `index` - Index into the vector of a ParamValue
  Returns:
    true if null
  Throws:
    `ParamSetException` - if there is an error with the ParamSet

### isNull

    public boolean isNull()

  Determines whether a ParamValue is null.

  Returns:
    true if null

### paramMode

    public int paramMode()

  Returns the paramMode of a ParamValue.

  Returns:
    int value of paramMode
  See Also:
    `ParamTypes`

### isScalar

    public boolean isScalar()

  Determines whether a ParamValue is scalar. A ParamValue is a scalar or a Vector. A ParamValue may be made up of a Vector of other ParamValues.

  Returns:
    false if Vector

### isVector

    public boolean isVector()

  Determines whether a ParamValue is a Vector. A ParamValue is a scalar or a Vector. A ParamValue may be made up of a Vector of other ParamValues.

  Returns:
    true if Vector

### isInt

    public boolean isInt()

  Determines whether a ParamValue is of type int.

  Returns:
    true if int

### isShort

    public boolean isShort()

  Determines whether a ParamValue is of type short.

  Returns:
    true if short

### isFloat

    public boolean isFloat()

  Determines whether a ParamValue is of type float.

  Returns:
    true if float

### isDouble

    public boolean isDouble()

  Determines whether a ParamValue is of type double.

  Returns:
    true if double

### isDate

    public boolean isDate()

  Determines whether a ParamValue is of type Date.

  Returns:
    true if Date

### isString

    public boolean isString()

  Determines whether a ParamValue is of type String.

  Returns:
    true if String

### isChar

    public boolean isChar()

  Determines whether a ParamValue is of type char.

  Returns:
    true if char

### isBoolean

    public boolean isBoolean()

  Determines whether a ParamValue is of type boolean.

  Returns:
    true if boolean

### isByte

    public boolean isByte()

  Determines whether a ParamValue is of type byte.

  Returns:
    true if byte

### isLong

    public boolean isLong()

  Determines whether a ParamValue is of type long.

  Returns:
    true if long

### isObject

    public boolean isObject()

  Determines whether a ParamValue is of type Object.

  Returns:
    true if Object

### elementAt

    public ParamValue elementAt(int index)

  Used for accessing ParamValues in a Vector of ParamValues. Returns the nth ParamValue. If the nth ParamValue did not previously exist, then creates a ParamValue at the specified index of type UNKNOWN.

  Parameters:
    `index` - Index position
  Throws:
    `ParamSetException` - if there is an error with the ParamSet
  See Also:
    `ParamTypes`

### setElementAt

    public void setElementAt(Object value,
                             int index)

  Sets the element at the specified index into Vector of ParamValues to the specified value.

  Parameters:
    `value` - Value
    `index` - Index position
  Throws:
    `ParamSetException` - if the value cannot be set

### size

    public int size()

  Returns the size of a Vector of ParamValues.

  Returns:
    Size of Vector
  Throws:
    `ParamSetException` - if there is an error with the ParamSet

### set

    public ParamValue set(ParamValue val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified ParamValue. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - Value of type ParamValue
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(boolean val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified boolean. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - boolean value
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(short val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified integer. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - short
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(int val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified int. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - int
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(long val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified long. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - long
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(double val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified double. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - double
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(float val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified float. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - float
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(char val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified char. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - char
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(String val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified string. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - String
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(Date val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified date. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - Date
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(Object val,
                          int index)

  Sets the value at the specified index into a Vector of ParamValues to the specified Object. If the ParamValue type is UNKNOWN, first sets the type to VECTOR.

  Parameters:
    `val` - Object
    `index` - Index into a Vector of ParamValues
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set
  See Also:
    `ParamTypes`

### set

    public ParamValue set(ParamValue val)

  Sets the value of a ParamValue to a ParamValue. If the type is unknown, sets it to the type of the specified ParamValue. If the specified ParamValue is a Vector of other ParamValues, copies the vector to the ParamValue that is returned.

  Parameters:
    `val` - ParamValue
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(boolean val)

  Sets the value of a ParamValue to a boolean.

  Parameters:
    `val` - boolean
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(int val)

  Sets the value of a ParamValue to an int.

  Parameters:
    `val` - int
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(short val)

  Sets the value of a ParamValue to a short.

  Parameters:
    `val` - short
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(byte val)

  Sets the value of a ParamValue to a byte.

  Parameters:
    `val` - byte
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(long val)

  Sets the value of a ParamValue to a long.

  Parameters:
    `val` - long
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(double val)

  Sets the value of a ParamValue to a double.

  Parameters:
    `val` - double
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(float val)

  Sets the value of a ParamValue to a float.

  Parameters:
    `val` - float
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(char val)

  Sets the value of a ParamValue to a char.

  Parameters:
    `val` - char
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(String val)

  Sets the value of a ParamValue to a String.

  Parameters:
    `val` - String
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(Date val)

  Sets the value of a ParamValue to a Date.

  Parameters:
    `val` - Date
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### set

    public ParamValue set(Object val)

  Sets the value of a ParamValue to an Object.

  Parameters:
    `val` - Object
  Returns:
    ParamValue object
  Throws:
    `ParamSetException` - if the value cannot be set

### asBoolean

    public boolean asBoolean()

  Returns a ParamValue as a boolean. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a boolean.

  Returns:
    boolean
  Throws:
    `ParamSetException` - if there is a conversion error

### asByte

    public byte asByte()

  Returns a ParamValue as a byte. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a byte.

  Returns:
    byte
  Throws:
    `ParamSetException` - if there is a conversion error

### asInt

    public int asInt()

  Returns a ParamValue as a int. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a int.

  Returns:
    int
  Throws:
    `ParamSetException` - if there is a conversion error

### asShort

    public short asShort()

  Returns a ParamValue as a short. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a short.

  Returns:
    short
  Throws:
    `ParamSetException` - if there is a conversion error

### asLong

    public long asLong()

  Returns a ParamValue as a long. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a long.

  Returns:
    long
  Throws:
    `ParamSetException` - if there is a conversion error

### asDouble

    public double asDouble()

  Returns a ParamValue as a double. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a double.

  Returns:
    double
  Throws:
    `ParamSetException` - if there is a conversion error

### asFloat

    public float asFloat()

  Returns a ParamValue as a float. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a float.

  Returns:
    float
  Throws:
    `ParamSetException` - if there is a conversion error

### asChar

    public char asChar()

  Returns a ParamValue as a char. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a char.

  Returns:
    char
  Throws:
    `ParamSetException` - if there is a conversion error

### asString

    public String asString()

  Returns a ParamValue as a String. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a String.

  Returns:
    String
  Throws:
    `ParamSetException` - if there is a conversion error

### toString

    public String toString()

  Returns a string representation of a ParamValue.

  Overrides:
    `toString` in class `Object`
  Returns:
    String

### dump

    public String dump()

  Returns a formatted string representation of a ParamValue.

  Returns:
    String

### asDate

    public Date asDate()

  Returns a ParamValue as a Date. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a Date.

  Returns:
    Date
  Throws:
    `ParamSetException` - if there is a conversion error

### asObject

    public Object asObject()

  Returns a ParamValue as an Object. If the ParamValue is a Vector of ParamValues, returns the ParamValue at the zeroeth position as a Object.

  Returns:
    Object
  Throws:
    `ParamSetException` - if there is a conversion error

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