jdk/src/java.management/share/classes/javax/management/openmbean/TabularData.java
changeset 32034 05676cfd40b5
parent 25859 3317bb8137f4
equal deleted inserted replaced
32033:bf24e33c7919 32034:05676cfd40b5
    35 // jmx import
    35 // jmx import
    36 //
    36 //
    37 
    37 
    38 
    38 
    39 /**
    39 /**
    40  * The <tt>TabularData</tt> interface specifies the behavior of a specific type of complex <i>open data</i> objects
    40  * The {@code TabularData} interface specifies the behavior of a specific type of complex <i>open data</i> objects
    41  * which represent <i>tabular data</i> structures.
    41  * which represent <i>tabular data</i> structures.
    42  *
    42  *
    43  * @since 1.5
    43  * @since 1.5
    44  */
    44  */
    45 public interface TabularData /*extends Map*/ {
    45 public interface TabularData /*extends Map*/ {
    48     /* *** TabularData specific information methods *** */
    48     /* *** TabularData specific information methods *** */
    49 
    49 
    50 
    50 
    51     /**
    51     /**
    52      * Returns the <i>tabular type</i> describing this
    52      * Returns the <i>tabular type</i> describing this
    53      * <tt>TabularData</tt> instance.
    53      * {@code TabularData} instance.
    54      *
    54      *
    55      * @return the tabular type.
    55      * @return the tabular type.
    56      */
    56      */
    57     public TabularType getTabularType();
    57     public TabularType getTabularType();
    58 
    58 
    59 
    59 
    60     /**
    60     /**
    61      * Calculates the index that would be used in this <tt>TabularData</tt> instance to refer to the specified
    61      * Calculates the index that would be used in this {@code TabularData} instance to refer to the specified
    62      * composite data <var>value</var> parameter if it were added to this instance.
    62      * composite data <var>value</var> parameter if it were added to this instance.
    63      * This method checks for the type validity of the specified <var>value</var>,
    63      * This method checks for the type validity of the specified <var>value</var>,
    64      * but does not check if the calculated index is already used to refer to a value in this <tt>TabularData</tt> instance.
    64      * but does not check if the calculated index is already used to refer to a value in this {@code TabularData} instance.
    65      *
    65      *
    66      * @param  value                      the composite data value whose index in this
    66      * @param  value                      the composite data value whose index in this
    67      *                                    <tt>TabularData</tt> instance is to be calculated;
    67      *                                    {@code TabularData} instance is to be calculated;
    68      *                                    must be of the same composite type as this instance's row type;
    68      *                                    must be of the same composite type as this instance's row type;
    69      *                                    must not be null.
    69      *                                    must not be null.
    70      *
    70      *
    71      * @return the index that the specified <var>value</var> would have in this <tt>TabularData</tt> instance.
    71      * @return the index that the specified <var>value</var> would have in this {@code TabularData} instance.
    72      *
    72      *
    73      * @throws NullPointerException       if <var>value</var> is <tt>null</tt>
    73      * @throws NullPointerException       if <var>value</var> is {@code null}
    74      *
    74      *
    75      * @throws InvalidOpenTypeException   if <var>value</var> does not conform to this <tt>TabularData</tt> instance's
    75      * @throws InvalidOpenTypeException   if <var>value</var> does not conform to this {@code TabularData} instance's
    76      *                                    row type definition.
    76      *                                    row type definition.
    77      */
    77      */
    78     public Object[] calculateIndex(CompositeData value) ;
    78     public Object[] calculateIndex(CompositeData value) ;
    79 
    79 
    80 
    80 
    81 
    81 
    82 
    82 
    83     /* *** Content information query methods *** */
    83     /* *** Content information query methods *** */
    84 
    84 
    85     /**
    85     /**
    86      * Returns the number of <tt>CompositeData</tt> values (ie the
    86      * Returns the number of {@code CompositeData} values (ie the
    87      * number of rows) contained in this <tt>TabularData</tt>
    87      * number of rows) contained in this {@code TabularData}
    88      * instance.
    88      * instance.
    89      *
    89      *
    90      * @return the number of values contained.
    90      * @return the number of values contained.
    91      */
    91      */
    92     public int size() ;
    92     public int size() ;
    93 
    93 
    94     /**
    94     /**
    95      * Returns <tt>true</tt> if the number of <tt>CompositeData</tt>
    95      * Returns {@code true} if the number of {@code CompositeData}
    96      * values (ie the number of rows) contained in this
    96      * values (ie the number of rows) contained in this
    97      * <tt>TabularData</tt> instance is zero.
    97      * {@code TabularData} instance is zero.
    98      *
    98      *
    99      * @return true if this <tt>TabularData</tt> is empty.
    99      * @return true if this {@code TabularData} is empty.
   100      */
   100      */
   101     public boolean isEmpty() ;
   101     public boolean isEmpty() ;
   102 
   102 
   103     /**
   103     /**
   104      * Returns <tt>true</tt> if and only if this <tt>TabularData</tt> instance contains a <tt>CompositeData</tt> value
   104      * Returns {@code true} if and only if this {@code TabularData} instance contains a {@code CompositeData} value
   105      * (ie a row) whose index is the specified <var>key</var>. If <var>key</var> is <tt>null</tt> or does not conform to
   105      * (ie a row) whose index is the specified <var>key</var>. If <var>key</var> is {@code null} or does not conform to
   106      * this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition, this method simply returns <tt>false</tt>.
   106      * this {@code TabularData} instance's {@code TabularType} definition, this method simply returns {@code false}.
   107      *
   107      *
   108      * @param  key  the index value whose presence in this <tt>TabularData</tt> instance is to be tested.
   108      * @param  key  the index value whose presence in this {@code TabularData} instance is to be tested.
   109      *
   109      *
   110      * @return  <tt>true</tt> if this <tt>TabularData</tt> indexes a row value with the specified key.
   110      * @return  {@code true} if this {@code TabularData} indexes a row value with the specified key.
   111      */
   111      */
   112     public boolean containsKey(Object[] key) ;
   112     public boolean containsKey(Object[] key) ;
   113 
   113 
   114     /**
   114     /**
   115      * Returns <tt>true</tt> if and only if this <tt>TabularData</tt> instance contains the specified
   115      * Returns {@code true} if and only if this {@code TabularData} instance contains the specified
   116      * <tt>CompositeData</tt> value. If <var>value</var> is <tt>null</tt> or does not conform to
   116      * {@code CompositeData} value. If <var>value</var> is {@code null} or does not conform to
   117      * this <tt>TabularData</tt> instance's row type definition, this method simply returns <tt>false</tt>.
   117      * this {@code TabularData} instance's row type definition, this method simply returns {@code false}.
   118      *
   118      *
   119      * @param  value  the row value whose presence in this <tt>TabularData</tt> instance is to be tested.
   119      * @param  value  the row value whose presence in this {@code TabularData} instance is to be tested.
   120      *
   120      *
   121      * @return  <tt>true</tt> if this <tt>TabularData</tt> instance contains the specified row value.
   121      * @return  {@code true} if this {@code TabularData} instance contains the specified row value.
   122      */
   122      */
   123     public boolean containsValue(CompositeData value) ;
   123     public boolean containsValue(CompositeData value) ;
   124 
   124 
   125     /**
   125     /**
   126      * Returns the <tt>CompositeData</tt> value whose index is
   126      * Returns the {@code CompositeData} value whose index is
   127      * <var>key</var>, or <tt>null</tt> if there is no value mapping
   127      * <var>key</var>, or {@code null} if there is no value mapping
   128      * to <var>key</var>, in this <tt>TabularData</tt> instance.
   128      * to <var>key</var>, in this {@code TabularData} instance.
   129      *
   129      *
   130      * @param key the key of the row to return.
   130      * @param key the key of the row to return.
   131      *
   131      *
   132      * @return the value corresponding to <var>key</var>.
   132      * @return the value corresponding to <var>key</var>.
   133      *
   133      *
   134      * @throws NullPointerException if the <var>key</var> is
   134      * @throws NullPointerException if the <var>key</var> is
   135      * <tt>null</tt>
   135      * {@code null}
   136      * @throws InvalidKeyException if the <var>key</var> does not
   136      * @throws InvalidKeyException if the <var>key</var> does not
   137      * conform to this <tt>TabularData</tt> instance's *
   137      * conform to this {@code TabularData} instance's *
   138      * <tt>TabularType</tt> definition
   138      * {@code TabularType} definition
   139      */
   139      */
   140     public CompositeData get(Object[] key) ;
   140     public CompositeData get(Object[] key) ;
   141 
   141 
   142 
   142 
   143 
   143 
   144 
   144 
   145     /* *** Content modification operations (one element at a time) *** */
   145     /* *** Content modification operations (one element at a time) *** */
   146 
   146 
   147 
   147 
   148     /**
   148     /**
   149      * Adds <var>value</var> to this <tt>TabularData</tt> instance.
   149      * Adds <var>value</var> to this {@code TabularData} instance.
   150      * The composite type of <var>value</var> must be the same as this
   150      * The composite type of <var>value</var> must be the same as this
   151      * instance's row type (ie the composite type returned by
   151      * instance's row type (ie the composite type returned by
   152      * <tt>this.getTabularType().{@link TabularType#getRowType
   152      * <code>this.getTabularType().{@link TabularType#getRowType
   153      * getRowType()}</tt>), and there must not already be an existing
   153      * getRowType()}</code>), and there must not already be an existing
   154      * value in this <tt>TabularData</tt> instance whose index is the
   154      * value in this {@code TabularData} instance whose index is the
   155      * same as the one calculated for the <var>value</var> to be
   155      * same as the one calculated for the <var>value</var> to be
   156      * added. The index for <var>value</var> is calculated according
   156      * added. The index for <var>value</var> is calculated according
   157      * to this <tt>TabularData</tt> instance's <tt>TabularType</tt>
   157      * to this {@code TabularData} instance's {@code TabularType}
   158      * definition (see <tt>TabularType.{@link
   158      * definition (see <code>TabularType.{@link
   159      * TabularType#getIndexNames getIndexNames()}</tt>).
   159      * TabularType#getIndexNames getIndexNames()}</code>).
   160      *
   160      *
   161      * @param  value                      the composite data value to be added as a new row to this <tt>TabularData</tt> instance;
   161      * @param  value                      the composite data value to be added as a new row to this {@code TabularData} instance;
   162      *                                    must be of the same composite type as this instance's row type;
   162      *                                    must be of the same composite type as this instance's row type;
   163      *                                    must not be null.
   163      *                                    must not be null.
   164      *
   164      *
   165      * @throws NullPointerException       if <var>value</var> is <tt>null</tt>
   165      * @throws NullPointerException       if <var>value</var> is {@code null}
   166      * @throws InvalidOpenTypeException   if <var>value</var> does not conform to this <tt>TabularData</tt> instance's
   166      * @throws InvalidOpenTypeException   if <var>value</var> does not conform to this {@code TabularData} instance's
   167      *                                    row type definition.
   167      *                                    row type definition.
   168      * @throws KeyAlreadyExistsException  if the index for <var>value</var>, calculated according to
   168      * @throws KeyAlreadyExistsException  if the index for <var>value</var>, calculated according to
   169      *                                    this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition
   169      *                                    this {@code TabularData} instance's {@code TabularType} definition
   170      *                                    already maps to an existing value in the underlying HashMap.
   170      *                                    already maps to an existing value in the underlying HashMap.
   171      */
   171      */
   172     public void put(CompositeData value) ;
   172     public void put(CompositeData value) ;
   173 
   173 
   174     /**
   174     /**
   175      * Removes the <tt>CompositeData</tt> value whose index is <var>key</var> from this <tt>TabularData</tt> instance,
   175      * Removes the {@code CompositeData} value whose index is <var>key</var> from this {@code TabularData} instance,
   176      * and returns the removed value, or returns <tt>null</tt> if there is no value whose index is <var>key</var>.
   176      * and returns the removed value, or returns {@code null} if there is no value whose index is <var>key</var>.
   177      *
   177      *
   178      * @param  key  the index of the value to get in this <tt>TabularData</tt> instance;
   178      * @param  key  the index of the value to get in this {@code TabularData} instance;
   179      *              must be valid with this <tt>TabularData</tt> instance's row type definition;
   179      *              must be valid with this {@code TabularData} instance's row type definition;
   180      *              must not be null.
   180      *              must not be null.
   181      *
   181      *
   182      * @return previous value associated with specified key, or <tt>null</tt>
   182      * @return previous value associated with specified key, or {@code null}
   183      *         if there was no mapping for key.
   183      *         if there was no mapping for key.
   184      *
   184      *
   185      * @throws NullPointerException  if the <var>key</var> is <tt>null</tt>
   185      * @throws NullPointerException  if the <var>key</var> is {@code null}
   186      * @throws InvalidKeyException   if the <var>key</var> does not conform to this <tt>TabularData</tt> instance's
   186      * @throws InvalidKeyException   if the <var>key</var> does not conform to this {@code TabularData} instance's
   187      *                               <tt>TabularType</tt> definition
   187      *                               {@code TabularType} definition
   188      */
   188      */
   189     public CompositeData remove(Object[] key) ;
   189     public CompositeData remove(Object[] key) ;
   190 
   190 
   191 
   191 
   192 
   192 
   193 
   193 
   194     /* ***   Content modification bulk operations   *** */
   194     /* ***   Content modification bulk operations   *** */
   195 
   195 
   196 
   196 
   197     /**
   197     /**
   198      * Add all the elements in <var>values</var> to this <tt>TabularData</tt> instance.
   198      * Add all the elements in <var>values</var> to this {@code TabularData} instance.
   199      * If any  element in <var>values</var> does not satisfy the constraints defined in {@link #put(CompositeData) <tt>put</tt>},
   199      * If any  element in <var>values</var> does not satisfy the constraints defined in {@link #put(CompositeData) put},
   200      * or if any two elements in <var>values</var> have the same index calculated according to this <tt>TabularData</tt>
   200      * or if any two elements in <var>values</var> have the same index calculated according to this {@code TabularData}
   201      * instance's <tt>TabularType</tt> definition, then an exception describing the failure is thrown
   201      * instance's {@code TabularType} definition, then an exception describing the failure is thrown
   202      * and no element of <var>values</var> is added,  thus leaving this <tt>TabularData</tt> instance unchanged.
   202      * and no element of <var>values</var> is added,  thus leaving this {@code TabularData} instance unchanged.
   203      *
   203      *
   204      * @param  values  the array of composite data values to be added as new rows to this <tt>TabularData</tt> instance;
   204      * @param  values  the array of composite data values to be added as new rows to this {@code TabularData} instance;
   205      *                 if <var>values</var> is <tt>null</tt> or empty, this method returns without doing anything.
   205      *                 if <var>values</var> is {@code null} or empty, this method returns without doing anything.
   206      *
   206      *
   207      * @throws NullPointerException       if an element of <var>values</var> is <tt>null</tt>
   207      * @throws NullPointerException       if an element of <var>values</var> is {@code null}
   208      * @throws InvalidOpenTypeException   if an element of <var>values</var> does not conform to
   208      * @throws InvalidOpenTypeException   if an element of <var>values</var> does not conform to
   209      *                                    this <tt>TabularData</tt> instance's row type definition
   209      *                                    this {@code TabularData} instance's row type definition
   210      * @throws KeyAlreadyExistsException  if the index for an element of <var>values</var>, calculated according to
   210      * @throws KeyAlreadyExistsException  if the index for an element of <var>values</var>, calculated according to
   211      *                                    this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition
   211      *                                    this {@code TabularData} instance's {@code TabularType} definition
   212      *                                    already maps to an existing value in this instance,
   212      *                                    already maps to an existing value in this instance,
   213      *                                    or two elements of <var>values</var> have the same index.
   213      *                                    or two elements of <var>values</var> have the same index.
   214      */
   214      */
   215     public void putAll(CompositeData[] values) ;
   215     public void putAll(CompositeData[] values) ;
   216 
   216 
   217     /**
   217     /**
   218      * Removes all <tt>CompositeData</tt> values (ie rows) from this <tt>TabularData</tt> instance.
   218      * Removes all {@code CompositeData} values (ie rows) from this {@code TabularData} instance.
   219      */
   219      */
   220     public void clear();
   220     public void clear();
   221 
   221 
   222 
   222 
   223 
   223 
   255 
   255 
   256     /* ***  Commodity methods from java.lang.Object  *** */
   256     /* ***  Commodity methods from java.lang.Object  *** */
   257 
   257 
   258 
   258 
   259     /**
   259     /**
   260      * Compares the specified <var>obj</var> parameter with this <code>TabularData</code> instance for equality.
   260      * Compares the specified <var>obj</var> parameter with this {@code TabularData} instance for equality.
   261      * <p>
   261      * <p>
   262      * Returns <tt>true</tt> if and only if all of the following statements are true:
   262      * Returns {@code true} if and only if all of the following statements are true:
   263      * <ul>
   263      * <ul>
   264      * <li><var>obj</var> is non null,</li>
   264      * <li><var>obj</var> is non null,</li>
   265      * <li><var>obj</var> also implements the <code>TabularData</code> interface,</li>
   265      * <li><var>obj</var> also implements the {@code TabularData} interface,</li>
   266      * <li>their row types are equal</li>
   266      * <li>their row types are equal</li>
   267      * <li>their contents (ie index to value mappings) are equal</li>
   267      * <li>their contents (ie index to value mappings) are equal</li>
   268      * </ul>
   268      * </ul>
   269      * This ensures that this <tt>equals</tt> method works properly for <var>obj</var> parameters which are
   269      * This ensures that this {@code equals} method works properly for <var>obj</var> parameters which are
   270      * different implementations of the <code>TabularData</code> interface.
   270      * different implementations of the {@code TabularData} interface.
   271      * <br>&nbsp;
   271      * <br>&nbsp;
   272      * @param  obj  the object to be compared for equality with this <code>TabularData</code> instance;
   272      * @param  obj  the object to be compared for equality with this {@code TabularData} instance;
   273      *
   273      *
   274      * @return  <code>true</code> if the specified object is equal to this <code>TabularData</code> instance.
   274      * @return  {@code true} if the specified object is equal to this {@code TabularData} instance.
   275      */
   275      */
   276     public boolean equals(Object obj);
   276     public boolean equals(Object obj);
   277 
   277 
   278     /**
   278     /**
   279      * Returns the hash code value for this <code>TabularData</code> instance.
   279      * Returns the hash code value for this {@code TabularData} instance.
   280      * <p>
   280      * <p>
   281      * The hash code of a <code>TabularData</code> instance is the sum of the hash codes
   281      * The hash code of a {@code TabularData} instance is the sum of the hash codes
   282      * of all elements of information used in <code>equals</code> comparisons
   282      * of all elements of information used in {@code equals} comparisons
   283      * (ie: its <i>tabular type</i> and its content, where the content is defined as all the index to value mappings).
   283      * (ie: its <i>tabular type</i> and its content, where the content is defined as all the index to value mappings).
   284      * <p>
   284      * <p>
   285      * This ensures that <code> t1.equals(t2) </code> implies that <code> t1.hashCode()==t2.hashCode() </code>
   285      * This ensures that {@code t1.equals(t2)} implies that {@code t1.hashCode()==t2.hashCode()}
   286      * for any two <code>TabularDataSupport</code> instances <code>t1</code> and <code>t2</code>,
   286      * for any two {@code TabularDataSupport} instances {@code t1} and {@code t2},
   287      * as required by the general contract of the method
   287      * as required by the general contract of the method
   288      * {@link Object#hashCode() Object.hashCode()}.
   288      * {@link Object#hashCode() Object.hashCode()}.
   289      *
   289      *
   290      * @return  the hash code value for this <code>TabularDataSupport</code> instance
   290      * @return  the hash code value for this {@code TabularDataSupport} instance
   291      */
   291      */
   292     public int hashCode();
   292     public int hashCode();
   293 
   293 
   294     /**
   294     /**
   295      * Returns a string representation of this <code>TabularData</code> instance.
   295      * Returns a string representation of this {@code TabularData} instance.
   296      * <p>
   296      * <p>
   297      * The string representation consists of the name of the implementing class,
   297      * The string representation consists of the name of the implementing class,
   298      * and the tabular type of this instance.
   298      * and the tabular type of this instance.
   299      *
   299      *
   300      * @return  a string representation of this <code>TabularData</code> instance
   300      * @return  a string representation of this {@code TabularData} instance
   301      */
   301      */
   302     public String toString();
   302     public String toString();
   303 
   303 
   304 }
   304 }