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@@ -2,7 +2,7 @@ |
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/** |
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* A Class to replace two booleans: Saved (unchanged) and Update (New vs Updating). |
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* |
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* <p/> |
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* This class carries two states about some other object: |
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* <OL> |
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* <LI> which CRUD operation is currently active</LI> |
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@@ -16,15 +16,15 @@ |
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* CRUD w/ supporting change management support flags |
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*/ |
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public enum Operation { |
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Create(false, true), // |
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Read(false, false), // |
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Update(false, true), // |
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Delete(true, false); |
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Create( false, true ), // |
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Read( false, false ), // |
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Update( false, true ), // |
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Delete( true, false ); |
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private boolean initialChangedState; |
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private boolean allowsOtherChanges; |
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Operation(boolean initialChangedState, boolean allowsOtherChanges) { |
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Operation( boolean initialChangedState, boolean allowsOtherChanges ) { |
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this.initialChangedState = initialChangedState; |
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this.allowsOtherChanges = allowsOtherChanges; |
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} |
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@@ -49,44 +49,44 @@ |
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return operation; |
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} |
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private void setOperation(Operation operation) { |
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private void setOperation( Operation operation ) { |
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this.operation = operation; |
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resetChanges(); |
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} |
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public void resetToCreate() { |
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setOperation(Operation.Create); |
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setOperation( Operation.Create ); |
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} |
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public void resetToRead() { |
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setOperation(Operation.Read); |
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setOperation( Operation.Read ); |
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} |
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public void resetToUpdate() { |
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setOperation(Operation.Update); |
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setOperation( Operation.Update ); |
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} |
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public void resetToDelete() { |
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setOperation(Operation.Delete); |
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setOperation( Operation.Delete ); |
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} |
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public boolean isCreate() { |
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return operation.equals(Operation.Create); |
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return operation.equals( Operation.Create ); |
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} |
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public boolean isRead() { |
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return operation.equals(Operation.Read); |
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return operation.equals( Operation.Read ); |
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} |
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public boolean isUpdate() { |
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return operation.equals(Operation.Update); |
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return operation.equals( Operation.Update ); |
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} |
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public boolean isDelete() { |
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return operation.equals(Operation.Delete); |
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return operation.equals( Operation.Delete ); |
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} |
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public void resetChanges(){ |
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public void resetChanges() { |
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changed = operation.getInitialChangedState(); |
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} |
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@@ -95,8 +95,8 @@ |
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} |
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public void changed() { |
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if (!operation.allowsOtherChanges) { |
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throw new IllegalStateException("The " + operation + " does NOT allow the data to be changed!"); |
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if ( !operation.allowsOtherChanges ) { |
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throw new IllegalStateException( "The " + operation + " does NOT allow the data to be changed!" ); |
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} |
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changed = true; |
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} |
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