Examples of java.util.BitSet

java.util.BitSet
This class implements a vector of bits that grows as needed. Each component of the bit set has a boolean value. The bits of a BitSet are indexed by nonnegative integers. Individual indexed bits can be examined, set, or cleared. One BitSet may be used to modify the contents of another BitSet through logical AND, logical inclusive OR, and logical exclusive OR operations.
By default, all bits in the set initially have the value false.
Every bit set has a current size, which is the number of bits of space currently in use by the bit set. Note that the size is related to the implementation of a bit set, so it may change with implementation. The length of a bit set relates to logical length of a bit set and is defined independently of implementation.
Unless otherwise noted, passing a null parameter to any of the methods in a BitSet will result in a NullPointerException.
A BitSet is not safe for multithreaded use without external synchronization. @author Arthur van Hoff @author Michael McCloskey @author Martin Buchholz @version 1.67, 04/07/06 @since JDK1.0

    /**
     * The constructor.
     */
    public BytecodeOutlineView() {
        super();
        modes = new BitSet();
        globalActions = new HashMap();
        selectionActions = new ArrayList();
    }

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        setEditorContextMenuId("#ClassFileEditorContext"); //$NON-NLS-1$
        setRulerContextMenuId("#ClassFileRulerContext"); //$NON-NLS-1$
        setOutlinerContextMenuId("#ClassFileOutlinerContext"); //$NON-NLS-1$
        // don't set help contextId, we install our own help context


        decompilerFlags = new BitSet();
        // TODO take from preferences and/or last editor memento
        decompilerFlags.set(BCOConstants.F_SHOW_LINE_INFO, true);
        decompilerFlags.set(BCOConstants.F_SHOW_VARIABLES, true);
        decompilerFlags.set(BCOConstants.F_SHOW_RAW_BYTECODE, false);
        setSourceAttachmentPossible(true);

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     *
     * @return converted boolean array as BitSet
     */
    public static BitSet getBitSetFromBooleanArray(boolean[] buf)
    {
        BitSet set = new BitSet();
        for (int i = 0; i < buf.length; i++)
        {
            if( buf[i] )
            {
                set.set(i);
            }
        }


        return set;
    }

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        }
        else if ((miscFlags&MISC_RETRIEVING_DETACHED_STATE)!=0)
        {
            // Retrieving the detached state from the detached object
            // Don't need the id or version since they can't change
            BitSet jdoLoadedFields = (BitSet)currentState[2];
            for (int i = 0; i < this.loadedFields.length; i++)
            {
                this.loadedFields[i] = jdoLoadedFields.get(i);
            }


            BitSet jdoModifiedFields = (BitSet)currentState[3];
            for (int i = 0; i < dirtyFields.length; i++)
            {
                dirtyFields[i] = jdoModifiedFields.get(i);
            }
            setVersion(currentState[1]);
            return currentState;
        }
        else
        {
            // Updating the detached state in the detached object with our state
            Object[] state = new Object[4];
            state[0] = myID;
            state[1] = getVersion(myPC);


            // Loaded fields
            BitSet loadedState = new BitSet();
            for (int i = 0; i < loadedFields.length; i++)
            {
                if (loadedFields[i])
                {
                    loadedState.set(i);
                }
                else
                {
                    loadedState.clear(i);
                }
            }
            state[2] = loadedState;


            // Modified fields
            BitSet modifiedState = new BitSet();
            for (int i = 0; i < dirtyFields.length; i++)
            {
                if (dirtyFields[i])
                {
                    modifiedState.set(i);
                }
                else
                {
                    modifiedState.clear(i);
                }
            }
            state[3] = modifiedState;


            return state;

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    /**
     * @see de.loskutov.branchview.connection.Command#exec(java.lang.Object)
     */
    protected void exec(IJavaElement element1, IJavaElement element2) throws Exception {
        final BitSet modes = getModes();
        CompareUI.openCompareEditor(new BytecodeCompare(
            createTypedElement(element1, modes),
            createTypedElement(element2, modes)));
    }

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        return new TypedElement(name, methodName, TypedElement.TYPE_BYTECODE, javaElement, modes);
    }


    private BitSet getModes() {
        IPreferenceStore store = BytecodeOutlinePlugin.getDefault().getPreferenceStore();
        BitSet modes = new BitSet();
        modes.set(BCOConstants.F_LINK_VIEW_TO_EDITOR, store.getBoolean(BCOConstants.LINK_VIEW_TO_EDITOR));
        modes.set(BCOConstants.F_SHOW_ONLY_SELECTED_ELEMENT, store.getBoolean(BCOConstants.SHOW_ONLY_SELECTED_ELEMENT));
        modes.set(BCOConstants.F_SHOW_RAW_BYTECODE, store.getBoolean(BCOConstants.SHOW_RAW_BYTECODE));
        modes.set(BCOConstants.F_SHOW_LINE_INFO, store.getBoolean(BCOConstants.DIFF_SHOW_LINE_INFO));
        modes.set(BCOConstants.F_SHOW_VARIABLES, store.getBoolean(BCOConstants.DIFF_SHOW_VARIABLES));
        modes.set(BCOConstants.F_SHOW_ASMIFIER_CODE, store.getBoolean(BCOConstants.DIFF_SHOW_ASMIFIER_CODE));
        modes.set(BCOConstants.F_SHOW_ANALYZER, store.getBoolean(BCOConstants.SHOW_ANALYZER));
        modes.set(BCOConstants.F_SHOW_STACKMAP, store.getBoolean(BCOConstants.DIFF_SHOW_STACKMAP));
        modes.set(BCOConstants.F_EXPAND_STACKMAP, store.getBoolean(BCOConstants.DIFF_EXPAND_STACKMAP));
        return modes;
    }

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         */
        public boolean isFieldInActualFetchPlan(int fieldNumber)
        {
            if (dirty)
            {
                BitSet fieldsNumber = getFieldsInActualFetchPlanByBitSet();
                return fieldsNumber.get(fieldNumber);
            }
            if (fieldsInActualFetchPlan != null)
            {
                for (int i=0;i<fieldsInActualFetchPlan.length;i++)
                {

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        public int[] getFieldsInActualFetchPlan()
        {
            if (dirty)
            {
                dirty = false;
                BitSet fieldsNumber = getFieldsInActualFetchPlanByBitSet();
                int countFieldsInFP = 0;
                for (int i = 0; i < fieldsNumber.length(); i++)
                {
                    if (fieldsNumber.get(i))
                    {
                        countFieldsInFP++;
                    }
                }


                fieldsInActualFetchPlan = new int[countFieldsInFP];
                int nextField = 0;
                for (int i = 0; i < fieldsNumber.length(); i++)
                {
                    if (fieldsNumber.get(i))
                    {
                        fieldsInActualFetchPlan[nextField++] = i;
                    }
                }
            }

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         * @param cmd this AbstractClassMetaData
         * @return an BitSet with the bits set in the absolute position of the fields
         */
        private BitSet getFieldsInActualFetchPlanByBitSet(AbstractClassMetaData cmd)
        {
            BitSet bitSet = plan.getFetchPlanForClass(cmd).getFieldsAbsoluteNumber(cmd.getFetchGroupMetaData());
            if (cmd.getPersistenceCapableSuperclass() != null)
            {
                plan.manageFetchPlanForClass(cmd.getSuperAbstractClassMetaData());
                bitSet.or(plan.getFetchPlanForClass(cmd.getSuperAbstractClassMetaData()).getFieldsInActualFetchPlanByBitSet(cmd.getSuperAbstractClassMetaData()));
            }
            else
            {
                // Make sure that we always have the PK fields in the fetch plan = FetchPlanImpl.NONE
                setNoneFieldNumbers(bitSet);
            }


            if (plan.dynamicGroups != null)
            {
                // JPOX dynamic fetch groups extension
                Iterator iter = plan.dynamicGroups.iterator();
                while (iter.hasNext())
                {
                    FetchGroup grp = (FetchGroup)iter.next();
                    if (grp.getClassName().equals(cmd.getFullClassName()))
                    {
                        // Dynamic fetch group applies
                        String[] fields = grp.getFieldNames();
                        for (int i=0;i<fields.length;i++)
                        {
                            int fieldPos = cmd.getAbsolutePositionOfMember(fields[i]);
                            if (fieldPos >= 0)
                            {
                                bitSet.set(fieldPos);
                            }
                        }
                    }
                }
            }

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         * @param fgmds The Fetch Groups
         * @return a BitSet with flags set to true in the field number positions
         */
        private BitSet getFieldsAbsoluteNumber(FetchGroupMetaData[] fgmds)
        {
            BitSet fieldsNumber = new BitSet(0);
            if (fgmds != null)
            {
                for (int i = 0; i < fgmds.length; i++)
                {
                    if (plan.groups.contains(fgmds[i].getName()))
                    {
                        fieldsNumber.or(getFieldsAbsoluteNumberInFetchGroup(fgmds[i]));
                    }
                }
            }


            if (plan.groups.contains(FetchPlan.DEFAULT))

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