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1 files changed, 258 insertions, 0 deletions

diff --git a/libjava/classpath/javax/management/openmbean/TabularData.java b/libjava/classpath/javax/management/openmbean/TabularData.java
new file mode 100644
index 000000000..8bceae85e
--- /dev/null
+++ b/libjava/classpath/javax/management/openmbean/TabularData.java
@@ -0,0 +1,258 @@
+/* TabularData.java -- Tables of composite data structures.
+   Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.management.openmbean;
+
+import java.util.Collection;
+import java.util.Set;
+
+/**
+ * Provides an interface to a specific type of composite
+ * data structure, where keys (the columns) map to the
+ * {@link CompositeData} objects that form the rows of
+ * the table.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.5
+ */
+public interface TabularData
+{
+
+  /**
+   * Calculates the index the specified {@link CompositeData} value
+   * would have, if it was to be added to this {@link TabularData}
+   * instance.  This method includes a check that the type of the
+   * given value is the same as the row type of this instance, but not
+   * a check for existing instances of the given value.  The value
+   * must also not be <code>null</code>.  Possible indices are
+   * returned by the {@link TabularType#getIndexNames()} method of
+   * this instance's tabular type.  The returned indices are the
+   * values of the fields in the supplied {@link CompositeData}
+   * instance that match the names given in the {@link TabularType}.
+   *
+   * @param val the {@link CompositeData} value whose index should
+   *            be calculated.
+   * @return the index the value would take on, if it were to be added.
+   * @throws NullPointerException if the value is <code>null</code>.
+   * @throws InvalidOpenTypeException if the value does not match the
+   *                                  row type of this instance.
+   */
+  Object[] calculateIndex(CompositeData val);
+
+  /**
+   * Removes all {@link CompositeData} values from the table.
+   */
+  void clear();
+
+  /**
+   * Returns true iff this instance of the {@link TabularData} class
+   * contains a {@link CompositeData} value at the specified index.
+   * In any other circumstance, including if the given key
+   * is <code>null</code> or of the incorrect type, according to
+   * the {@link TabularType} of this instance, this method returns
+   * false.
+   *
+   * @param key the key to test for.
+   * @return true if the key maps to a {@link CompositeData} value.
+   */
+  boolean containsKey(Object[] key);
+
+  /**
+   * Returns true iff this instance of the {@link TabularData} class
+   * contains the specified {@link CompositeData} value.
+   * In any other circumstance, including if the given value
+   * is <code>null</code> or of the incorrect type, according to
+   * the {@link TabularType} of this instance, this method returns
+   * false.
+   *
+   * @param val the value to test for.
+   * @return true if the value exists.
+   */
+  boolean containsValue(CompositeData val);
+
+  /**
+   * Compares the specified object with this object for equality.
+   * The object is judged equivalent if it is non-null, and also
+   * an instance of {@link TabularData} with the same row type,
+   * and {@link CompositeData} values.  The two compared instances may
+   * be equivalent even if they represent different implementations
+   * of {@link TabularData}.
+   *
+   * @param obj the object to compare for equality.
+   * @return true if <code>obj</code> is equal to <code>this</code>.
+   */
+  boolean equals(Object obj);
+
+  /**
+   * Retrieves the {@link CompositeData} value for the specified
+   * key, or <code>null</code> if no such mapping exists.
+   *
+   * @param key the key whose value should be returned.
+   * @return the matching {@link CompositeData} value, or
+   *         <code>null</code> if one does not exist.
+   * @throws NullPointerException if the key is <code>null</code>.
+   * @throws InvalidKeyException if the key does not match
+   *                             the {@link TabularType} of this
+   *                             instance.
+   */
+  CompositeData get(Object[] key);
+
+  /**
+   * Returns the tabular type which corresponds to this instance
+   * of {@link TabularData}.
+   *
+   * @return the tabular type for this instance.
+   */
+  TabularType getTabularType();
+
+  /**
+   * Returns the hash code of the composite data type.  This is
+   * computed as the sum of the hash codes of each value, together
+   * with the hash code of the tabular type.  These are the same
+   * elements of the type that are compared as part of the {@link
+   * #equals(java.lang.Object)} method, thus ensuring that the
+   * hashcode is compatible with the equality test.
+   *
+   * @return the hash code of this instance.
+   */
+  int hashCode();
+
+  /**
+   * Returns true if this {@link TabularData} instance
+   * contains no {@link CompositeData} values.
+   *
+   * @return true if the instance is devoid of rows.
+   */
+  boolean isEmpty();
+
+  /**
+   * Returns a {@link java.util.Set} view of the keys or
+   * indices of this {@link TabularData} instance.
+   *
+   * @return a set containing the keys of this instance.
+   */
+  Set<?> keySet();
+
+  /**
+   * Adds the specified {@link CompositeData} value to the
+   * table.  The value must be non-null, of the same type
+   * as the row type of this instance, and must not have
+   * the same index as an existing value.  The index is
+   * calculated using the index names of the
+   * {@link TabularType} for this instance.
+   *
+   * @param val the {@link CompositeData} value to add.
+   * @throws NullPointerException if <code>val</code> is
+   *                              <code>null</code>.
+   * @throws InvalidOpenTypeException if the type of the
+   *                                  given value does not
+   *                                  match the row type.
+   * @throws KeyAlreadyExistsException if the value has the
+   *                                   same calculated index
+   *                                   as an existing value.
+   */
+  void put(CompositeData val);
+
+  /**
+   * Adds each of the specified {@link CompositeData} values
+   * to the table.  Each element of the array must meet the
+   * conditions given for the {@link #put(CompositeData)}
+   * method.  In addition, the index of each value in the
+   * array must be distinct from the index of the other
+   * values in the array, as well as from the existing values
+   * in the table.  The operation should be atomic; if one
+   * value can not be added, then none of the values should
+   * be.  If the array is <code>null</code> or empty, the
+   * method simply returns.
+   *
+   * @param vals the {@link CompositeData} values to add.
+   * @throws NullPointerException if a value from the array is
+   *                              <code>null</code>.
+   * @throws InvalidOpenTypeException if the type of a
+   *                                  given value does not
+   *                                  match the row type.
+   * @throws KeyAlreadyExistsException if a value has the
+   *                                   same calculated index
+   *                                   as an existing value or
+   *                                   of one of the other
+   *                                   specified values.
+   */
+  void putAll(CompositeData[] vals);
+
+  /**
+   * Removes the {@link CompositeData} value located at the
+   * specified index.  <code>null</code> is returned if the
+   * value does not exist.  Otherwise, the removed value is
+   * returned.
+   *
+   * @param key the key of the value to remove.
+   * @return the removed value, or <code>null</code> if
+   *         there is no value for the given key.
+   * @throws NullPointerException if the key is <code>null</code>.
+   * @throws InvalidOpenTypeException if the key does not match
+   *                                  the {@link TabularType} of this
+   *                                  instance.
+   */
+  CompositeData remove(Object[] key);
+
+  /**
+   * Returns the number of {@link CompositeData} values or rows
+   * in the table.
+   *
+   * @return the number of rows in the table.
+   */
+  int size();
+
+  /**
+   * Returns a textual representation of this instance.  The
+   * exact format is left up to the implementation, but it
+   * should contain the name of the implementing class and
+   * the tabular type.
+   *
+   * @return a {@link java.lang.String} representation of the
+   *         object.
+   */
+  String toString();
+
+  /**
+   * Returns the values associated with this instance.
+   *
+   * @return the values of this instance.
+   */
+  Collection<?> values();
+
+}