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	/*
	* Copyright (c) 2000, 2007, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/


	package javax.management.openmbean;


	// java import
	//
	import java.util.Set;
	import java.util.Collection;

	// jmx import
	//


	/**
	* The <tt>TabularData</tt> interface specifies the behavior of a specific type of complex <i>open data</i> objects
	* which represent <i>tabular data</i> structures.
	*
	* @since 1.5
	*/
	public interface TabularData /extends Map/ {


	/* * TabularData specific information methods * */


	/**
	* Returns the <i>tabular type</i> describing this
	* <tt>TabularData</tt> instance.
	*
	* @return the tabular type.
	*/
	public TabularType getTabularType();


	/**
	* Calculates the index that would be used in this <tt>TabularData</tt> instance to refer to the specified
	* composite data <var>value</var> parameter if it were added to this instance.
	* This method checks for the type validity of the specified <var>value</var>,
	* but does not check if the calculated index is already used to refer to a value in this <tt>TabularData</tt> instance.
	*
	* @param value the composite data value whose index in this
	* <tt>TabularData</tt> instance is to be calculated;
	* must be of the same composite type as this instance's row type;
	* must not be null.
	*
	* @return the index that the specified <var>value</var> would have in this <tt>TabularData</tt> instance.
	*
	* @throws NullPointerException if <var>value</var> is <tt>null</tt>
	*
	* @throws InvalidOpenTypeException if <var>value</var> does not conform to this <tt>TabularData</tt> instance's
	* row type definition.
	*/
	public Object[] calculateIndex(CompositeData value) ;




	/* * Content information query methods * */

	/**
	* Returns the number of <tt>CompositeData</tt> values (ie the
	* number of rows) contained in this <tt>TabularData</tt>
	* instance.
	*
	* @return the number of values contained.
	*/
	public int size() ;

	/**
	* Returns <tt>true</tt> if the number of <tt>CompositeData</tt>
	* values (ie the number of rows) contained in this
	* <tt>TabularData</tt> instance is zero.
	*
	* @return true if this <tt>TabularData</tt> is empty.
	*/
	public boolean isEmpty() ;

	/**
	* Returns <tt>true</tt> if and only if this <tt>TabularData</tt> instance contains a <tt>CompositeData</tt> value
	* (ie a row) whose index is the specified <var>key</var>. If <var>key</var> is <tt>null</tt> or does not conform to
	* this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition, this method simply returns <tt>false</tt>.
	*
	* @param key the index value whose presence in this <tt>TabularData</tt> instance is to be tested.
	*
	* @return <tt>true</tt> if this <tt>TabularData</tt> indexes a row value with the specified key.
	*/
	public boolean containsKey(Object[] key) ;

	/**
	* Returns <tt>true</tt> if and only if this <tt>TabularData</tt> instance contains the specified
	* <tt>CompositeData</tt> value. If <var>value</var> is <tt>null</tt> or does not conform to
	* this <tt>TabularData</tt> instance's row type definition, this method simply returns <tt>false</tt>.
	*
	* @param value the row value whose presence in this <tt>TabularData</tt> instance is to be tested.
	*
	* @return <tt>true</tt> if this <tt>TabularData</tt> instance contains the specified row value.
	*/
	public boolean containsValue(CompositeData value) ;

	/**
	* Returns the <tt>CompositeData</tt> value whose index is
	* <var>key</var>, or <tt>null</tt> if there is no value mapping
	* to <var>key</var>, in this <tt>TabularData</tt> instance.
	*
	* @param key the key of the row to return.
	*
	* @return the value corresponding to <var>key</var>.
	*
	* @throws NullPointerException if the <var>key</var> is
	* <tt>null</tt>
	* @throws InvalidKeyException if the <var>key</var> does not
	* conform to this <tt>TabularData</tt> instance's *
	* <tt>TabularType</tt> definition
	*/
	public CompositeData get(Object[] key) ;




	/* * Content modification operations (one element at a time) * */


	/**
	* Adds <var>value</var> to this <tt>TabularData</tt> instance.
	* The composite type of <var>value</var> must be the same as this
	* instance's row type (ie the composite type returned by
	* <tt>this.getTabularType().{@link TabularType#getRowType
	* getRowType()}</tt>), and there must not already be an existing
	* value in this <tt>TabularData</tt> instance whose index is the
	* same as the one calculated for the <var>value</var> to be
	* added. The index for <var>value</var> is calculated according
	* to this <tt>TabularData</tt> instance's <tt>TabularType</tt>
	* definition (see <tt>TabularType.{@link
	* TabularType#getIndexNames getIndexNames()}</tt>).
	*
	* @param value the composite data value to be added as a new row to this <tt>TabularData</tt> instance;
	* must be of the same composite type as this instance's row type;
	* must not be null.
	*
	* @throws NullPointerException if <var>value</var> is <tt>null</tt>
	* @throws InvalidOpenTypeException if <var>value</var> does not conform to this <tt>TabularData</tt> instance's
	* row type definition.
	* @throws KeyAlreadyExistsException if the index for <var>value</var>, calculated according to
	* this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition
	* already maps to an existing value in the underlying HashMap.
	*/
	public void put(CompositeData value) ;

	/**
	* Removes the <tt>CompositeData</tt> value whose index is <var>key</var> from this <tt>TabularData</tt> instance,
	* and returns the removed value, or returns <tt>null</tt> if there is no value whose index is <var>key</var>.
	*
	* @param key the index of the value to get in this <tt>TabularData</tt> instance;
	* must be valid with this <tt>TabularData</tt> instance's row type definition;
	* must not be null.
	*
	* @return previous value associated with specified key, or <tt>null</tt>
	* if there was no mapping for key.
	*
	* @throws NullPointerException if the <var>key</var> is <tt>null</tt>
	* @throws InvalidKeyException if the <var>key</var> does not conform to this <tt>TabularData</tt> instance's
	* <tt>TabularType</tt> definition
	*/
	public CompositeData remove(Object[] key) ;




	/* * Content modification bulk operations * */


	/**
	* Add all the elements in <var>values</var> to this <tt>TabularData</tt> instance.
	* If any element in <var>values</var> does not satisfy the constraints defined in {@link #put(CompositeData) <tt>put</tt>},
	* or if any two elements in <var>values</var> have the same index calculated according to this <tt>TabularData</tt>
	* instance's <tt>TabularType</tt> definition, then an exception describing the failure is thrown
	* and no element of <var>values</var> is added, thus leaving this <tt>TabularData</tt> instance unchanged.
	*
	* @param values the array of composite data values to be added as new rows to this <tt>TabularData</tt> instance;
	* if <var>values</var> is <tt>null</tt> or empty, this method returns without doing anything.
	*
	* @throws NullPointerException if an element of <var>values</var> is <tt>null</tt>
	* @throws InvalidOpenTypeException if an element of <var>values</var> does not conform to
	* this <tt>TabularData</tt> instance's row type definition
	* @throws KeyAlreadyExistsException if the index for an element of <var>values</var>, calculated according to
	* this <tt>TabularData</tt> instance's <tt>TabularType</tt> definition
	* already maps to an existing value in this instance,
	* or two elements of <var>values</var> have the same index.
	*/
	public void putAll(CompositeData[] values) ;

	/**
	* Removes all <tt>CompositeData</tt> values (ie rows) from this <tt>TabularData</tt> instance.
	*/
	public void clear();




	/* * Collection views of the keys and values * */


	/**
	* Returns a set view of the keys (ie the index values) of the
	* {@code CompositeData} values (ie the rows) contained in this
	* {@code TabularData} instance. The returned {@code Set} is a
	* {@code Set<List<?>>} but is declared as a {@code Set<?>} for
	* compatibility reasons. The returned set can be used to iterate
	* over the keys.
	*
	* @return a set view ({@code Set<List<?>>}) of the index values
	* used in this {@code TabularData} instance.
	*/
	public Set<?> keySet();

	/**
	* Returns a collection view of the {@code CompositeData} values
	* (ie the rows) contained in this {@code TabularData} instance.
	* The returned {@code Collection} is a {@code Collection<CompositeData>}
	* but is declared as a {@code Collection<?>} for compatibility reasons.
	* The returned collection can be used to iterate over the values.
	*
	* @return a collection view ({@code Collection<CompositeData>})
	* of the rows contained in this {@code TabularData} instance.
	*/
	public Collection<?> values();




	/* * Commodity methods from java.lang.Object * */


	/**
	* Compares the specified <var>obj</var> parameter with this <code>TabularData</code> instance for equality.
	* <p>
	* Returns <tt>true</tt> if and only if all of the following statements are true:
	* <ul>
	* <li><var>obj</var> is non null,</li>
	* <li><var>obj</var> also implements the <code>TabularData</code> interface,</li>
	* <li>their row types are equal</li>
	* <li>their contents (ie index to value mappings) are equal</li>
	* </ul>
	* This ensures that this <tt>equals</tt> method works properly for <var>obj</var> parameters which are
	* different implementations of the <code>TabularData</code> interface.
	* <br>
	* @param obj the object to be compared for equality with this <code>TabularData</code> instance;
	*
	* @return <code>true</code> if the specified object is equal to this <code>TabularData</code> instance.
	*/
	public boolean equals(Object obj);

	/**
	* Returns the hash code value for this <code>TabularData</code> instance.
	* <p>
	* The hash code of a <code>TabularData</code> instance is the sum of the hash codes
	* of all elements of information used in <code>equals</code> comparisons
	* (ie: its <i>tabular type</i> and its content, where the content is defined as all the index to value mappings).
	* <p>
	* This ensures that <code> t1.equals(t2) </code> implies that <code> t1.hashCode()==t2.hashCode() </code>
	* for any two <code>TabularDataSupport</code> instances <code>t1</code> and <code>t2</code>,
	* as required by the general contract of the method
	* {@link Object#hashCode() Object.hashCode()}.
	*
	* @return the hash code value for this <code>TabularDataSupport</code> instance
	*/
	public int hashCode();

	/**
	* Returns a string representation of this <code>TabularData</code> instance.
	* <p>
	* The string representation consists of the name of the implementing class,
	* and the tabular type of this instance.
	*
	* @return a string representation of this <code>TabularData</code> instance
	*/
	public String toString();

	}

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