javax.jms.MapMessage Maven / Gradle / Ivy
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package javax.jms;
import java.util.Enumeration;
/** A MapMessage object is used to send a set of name-value pairs.
* The names are String objects, and the values are primitive
* data types in the Java programming language. The names must have a value that
* is not null, and not an empty string. The entries can be accessed
* sequentially or randomly by name. The order of the entries is undefined.
* MapMessage inherits from the Message interface
* and adds a message body that contains a Map.
*
* The primitive types can be read or written explicitly using methods
* for each type. They may also be read or written generically as objects.
* For instance, a call to MapMessage.setInt("foo", 6) is
* equivalent to MapMessage.setObject("foo", new Integer(6)).
* Both forms are provided, because the explicit form is convenient for
* static programming, and the object form is needed when types are not known
* at compile time.
*
*
When a client receives a MapMessage, it is in read-only
* mode. If a client attempts to write to the message at this point, a
* MessageNotWriteableException is thrown. If
* clearBody is called, the message can now be both read from and
* written to.
*
*
MapMessage objects support the following conversion table.
* The marked cases must be supported. The unmarked cases must throw a
* JMSException. The String-to-primitive conversions
* may throw a runtime exception if the primitive's valueOf()
* method does not accept it as a valid String representation of
* the primitive.
*
*
A value written as the row type can be read as the column type.
*
*
* | | boolean byte short char int long float double String byte[]
* |----------------------------------------------------------------------
* |boolean | X X
* |byte | X X X X X
* |short | X X X X
* |char | X X
* |int | X X X
* |long | X X
* |float | X X X
* |double | X X
* |String | X X X X X X X X
* |byte[] | X
* |----------------------------------------------------------------------
*
*
* Attempting to read a null value as a primitive type must be treated
* as calling the primitive's corresponding valueOf(String)
* conversion method with a null value. Since char does not
* support a String conversion, attempting to read a null value
* as a char must throw a NullPointerException.
*
* @version 1.1 February 2, 002
* @author Mark Hapner
* @author Rich Burridge
*
* @see javax.jms.Session#createMapMessage()
* @see javax.jms.BytesMessage
* @see javax.jms.Message
* @see javax.jms.ObjectMessage
* @see javax.jms.StreamMessage
* @see javax.jms.TextMessage
*/
public interface MapMessage extends Message {
/** Returns the boolean value with the specified name.
*
* @param name the name of the boolean
*
* @return the boolean value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
boolean
getBoolean(String name) throws JMSException;
/** Returns the byte value with the specified name.
*
* @param name the name of the byte
*
* @return the byte value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
byte
getByte(String name) throws JMSException;
/** Returns the short value with the specified name.
*
* @param name the name of the short
*
* @return the short value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
short
getShort(String name) throws JMSException;
/** Returns the Unicode character value with the specified name.
*
* @param name the name of the Unicode character
*
* @return the Unicode character value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
char
getChar(String name) throws JMSException;
/** Returns the int value with the specified name.
*
* @param name the name of the int
*
* @return the int value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
int
getInt(String name) throws JMSException;
/** Returns the long value with the specified name.
*
* @param name the name of the long
*
* @return the long value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
long
getLong(String name) throws JMSException;
/** Returns the float value with the specified name.
*
* @param name the name of the float
*
* @return the float value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
float
getFloat(String name) throws JMSException;
/** Returns the double value with the specified name.
*
* @param name the name of the double
*
* @return the double value with the specified name
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
double
getDouble(String name) throws JMSException;
/** Returns the String value with the specified name.
*
* @param name the name of the String
*
* @return the String value with the specified name; if there
* is no item by this name, a null value is returned
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
String
getString(String name) throws JMSException;
/** Returns the byte array value with the specified name.
*
* @param name the name of the byte array
*
* @return a copy of the byte array value with the specified name; if there
* is no
* item by this name, a null value is returned.
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
* @exception MessageFormatException if this type conversion is invalid.
*/
byte[]
getBytes(String name) throws JMSException;
/** Returns the value of the object with the specified name.
*
*
This method can be used to return, in objectified format,
* an object in the Java programming language ("Java object") that had
* been stored in the Map with the equivalent
* setObject method call, or its equivalent primitive
* settype method.
*
*
Note that byte values are returned as byte[], not
* Byte[].
*
* @param name the name of the Java object
*
* @return a copy of the Java object value with the specified name, in
* objectified format (for example, if the object was set as an
* int, an Integer is returned); if there is no
* item by this name, a null value is returned
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
*/
Object
getObject(String name) throws JMSException;
/** Returns an Enumeration of all the names in the
* MapMessage object.
*
* @return an enumeration of all the names in this MapMessage
*
* @exception JMSException if the JMS provider fails to read the message
* due to some internal error.
*/
Enumeration
getMapNames() throws JMSException;
/** Sets a boolean value with the specified name into the Map.
*
* @param name the name of the boolean
* @param value the boolean value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setBoolean(String name, boolean value) throws JMSException;
/** Sets a byte value with the specified name into the Map.
*
* @param name the name of the byte
* @param value the byte value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setByte(String name, byte value)
throws JMSException;
/** Sets a short value with the specified name into the Map.
*
* @param name the name of the short
* @param value the short value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setShort(String name, short value)
throws JMSException;
/** Sets a Unicode character value with the specified name into the Map.
*
* @param name the name of the Unicode character
* @param value the Unicode character value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setChar(String name, char value)
throws JMSException;
/** Sets an int value with the specified name into the Map.
*
* @param name the name of the int
* @param value the int value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setInt(String name, int value)
throws JMSException;
/** Sets a long value with the specified name into the Map.
*
* @param name the name of the long
* @param value the long value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setLong(String name, long value)
throws JMSException;
/** Sets a float value with the specified name into the Map.
*
* @param name the name of the float
* @param value the float value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setFloat(String name, float value)
throws JMSException;
/** Sets a double value with the specified name into the Map.
*
* @param name the name of the double
* @param value the double value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setDouble(String name, double value)
throws JMSException;
/** Sets a String value with the specified name into the Map.
*
* @param name the name of the String
* @param value the String value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setString(String name, String value)
throws JMSException;
/** Sets a byte array value with the specified name into the Map.
*
* @param name the name of the byte array
* @param value the byte array value to set in the Map; the array
* is copied so that the value for name will
* not be altered by future modifications
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception NullPointerException if the name is null, or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setBytes(String name, byte[] value)
throws JMSException;
/** Sets a portion of the byte array value with the specified name into the
* Map.
*
* @param name the name of the byte array
* @param value the byte array value to set in the Map
* @param offset the initial offset within the byte array
* @param length the number of bytes to use
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setBytes(String name, byte[] value,
int offset, int length)
throws JMSException;
/** Sets an object value with the specified name into the Map.
*
*
This method works only for the objectified primitive
* object types (Integer, Double,
* Long ...), String objects, and byte
* arrays.
*
* @param name the name of the Java object
* @param value the Java object value to set in the Map
*
* @exception JMSException if the JMS provider fails to write the message
* due to some internal error.
* @exception IllegalArgumentException if the name is null or if the name is
* an empty string.
* @exception MessageFormatException if the object is invalid.
* @exception MessageNotWriteableException if the message is in read-only
* mode.
*/
void
setObject(String name, Object value)
throws JMSException;
/** Indicates whether an item exists in this MapMessage object.
*
* @param name the name of the item to test
*
* @return true if the item exists
*
* @exception JMSException if the JMS provider fails to determine if the
* item exists due to some internal error.
*/
boolean
itemExists(String name) throws JMSException;
}