db4o

Db4oCollections.newHashMap Method 

creates a new database-aware HashMap.

Db4oMap newHashMap(
   int initialSize
);

Parameters

initialSize
the initial size of the HashMap

Return Value

com.db4o.types.Db4oMap

Remarks

creates a new database-aware HashMap.

This map will call the hashCode() method on the key objects to calculate the hash value. Since the hash value is stored to the ObjectContainer, key objects will have to return the same hashCode() value in every VM session.

Usage:
- declare a

java.util.Map
variable in your persistent class.
- fill the variable with this method.

Example:

                    
            class MyClass{
            Map myMap;
            }
            MyClass myObject = new MyClass();
            myObject.myMap = objectContainer.ext().collections().newHashMap(0);


See Also

Db4oCollections Interface | com.db4o.types Namespace | com.db4o.types.Db4oMap