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The "split map" concept is that of an object that implements the Put and Get interfaces, with differing generic types. This is like a pre-generics Map whose input key/value constraints are different than its output key/value constraints. While it would be possible to declare a "split map" with matching input/output key/value constraints, this would be a Map and would therefore make little sense (any Commons Collections Map implementation will also implement Put and Get with matching generic parameters).

The following decorators are provided:

  • Transformed - transforms each element added
/** * The "split map" concept is that of an object that implements * the {@link org.apache.commons.collections4.Put Put} and * {@link org.apache.commons.collections4.Get Get} interfaces, * with <i>differing</i> generic types. This is like a pre-generics * {@link java.util.Map Map} whose input key/value constraints are * different than its output key/value constraints. While it would * be possible to declare a "split map" with matching input/output * key/value constraints, this would be a {@link java.util.Map Map} * and would therefore make little sense (any Commons Collections * {@link java.util.Map Map} implementation will also implement * {@link org.apache.commons.collections4.Put Put} and * {@link org.apache.commons.collections4.Get Get} with matching * generic parameters). * <p> * The following decorators are provided: * <ul> * <li>Transformed - transforms each element added * </ul> * */
package org.apache.commons.collections4.splitmap;