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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright (C) 2008 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.collect;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static java.util.Objects.requireNonNull;

import com.google.common.annotations.GwtCompatible;
import com.google.common.base.Supplier;
import java.io.Serializable;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import javax.annotation.CheckForNull;

/**
 * Implementation of {@code Table} whose row keys and column keys are ordered by their natural
 * ordering or by supplied comparators. When constructing a {@code TreeBasedTable}, you may provide
 * comparators for the row keys and the column keys, or you may use natural ordering for both.
 *
 * 
The {@link #rowKeySet} method returns a {@link SortedSet} and the {@link #rowMap} method
 * returns a {@link SortedMap}, instead of the {@link Set} and {@link Map} specified by the {@link
 * Table} interface.
 *
 * 
The views returned by {@link #column}, {@link #columnKeySet()}, and {@link #columnMap()} have
 * iterators that don't support {@code remove()}. Otherwise, all optional operations are supported.
 * Null row keys, columns keys, and values are not supported.
 *
 * 
Lookups by row key are often faster than lookups by column key, because the data is stored in
 * a {@code Map>}. A method call like {@code column(columnKey).get(rowKey)} still runs
 * quickly, since the row key is provided. However, {@code column(columnKey).size()} takes longer,
 * since an iteration across all row keys occurs.
 *
 * 
Because a {@code TreeBasedTable} has unique sorted values for a given row, both {@code
 * row(rowKey)} and {@code rowMap().get(rowKey)} are {@link SortedMap} instances, instead of the
 * {@link Map} specified in the {@link Table} interface.
 *
 * 
Note that this implementation is not synchronized. If multiple threads access this table
 * concurrently and one of the threads modifies the table, it must be synchronized externally.
 *
 * 
See the Guava User Guide article on {@code Table}.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 7.0
 */
@GwtCompatible(serializable = true)
@ElementTypesAreNonnullByDefault
public class TreeBasedTable extends StandardRowSortedTable {
  private final Comparator columnComparator;

  private static class Factory implements Supplier>, Serializable {
    final Comparator comparator;

    Factory(Comparator comparator) {
      this.comparator = comparator;
    }

    @Override
    public TreeMap get() {
      return new TreeMap<>(comparator);
    }

    private static final long serialVersionUID = 0;
  }

  /**
   * Creates an empty {@code TreeBasedTable} that uses the natural orderings of both row and column
   * keys.
   *
   * 
The method signature specifies {@code R extends Comparable} with a raw {@link Comparable},
   * instead of {@code R extends Comparable}, and the same for {@code C}. That's
   * necessary to support classes defined without generics.
   */
  public static  TreeBasedTable create() {
    return new TreeBasedTable<>(Ordering.natural(), Ordering.natural());
  }

  /**
   * Creates an empty {@code TreeBasedTable} that is ordered by the specified comparators.
   *
   * @param rowComparator the comparator that orders the row keys
   * @param columnComparator the comparator that orders the column keys
   */
  public static  TreeBasedTable create(
      Comparator rowComparator, Comparator columnComparator) {
    checkNotNull(rowComparator);
    checkNotNull(columnComparator);
    return new TreeBasedTable<>(rowComparator, columnComparator);
  }

  /**
   * Creates a {@code TreeBasedTable} with the same mappings and sort order as the specified {@code
   * TreeBasedTable}.
   */
  public static  TreeBasedTable create(TreeBasedTable table) {
    TreeBasedTable result =
        new TreeBasedTable<>(table.rowComparator(), table.columnComparator());
    result.putAll(table);
    return result;
  }

  TreeBasedTable(Comparator rowComparator, Comparator columnComparator) {
    super(new TreeMap>(rowComparator), new Factory(columnComparator));
    this.columnComparator = columnComparator;
  }

  // TODO(jlevy): Move to StandardRowSortedTable?

  /**
   * Returns the comparator that orders the rows. With natural ordering, {@link Ordering#natural()}
   * is returned.
   *
   * @deprecated Use {@code table.rowKeySet().comparator()} instead.
   */
  @Deprecated
  public Comparator rowComparator() {
    /*
     * requireNonNull is safe because the factories require non-null Comparators, which they pass on
     * to the backing collections.
     */
    return requireNonNull(rowKeySet().comparator());
  }

  /**
   * Returns the comparator that orders the columns. With natural ordering, {@link
   * Ordering#natural()} is returned.
   *
   * @deprecated Store the {@link Comparator} alongside the {@link Table}. Or, if you know that the
   *     {@link Table} contains at least one value, you can retrieve the {@link Comparator} with:
   *     {@code ((SortedMap) table.rowMap().values().iterator().next()).comparator();}.
   */
  @Deprecated
  public Comparator columnComparator() {
    return columnComparator;
  }

  // TODO(lowasser): make column return a SortedMap

  /**
   * {@inheritDoc}
   *
   * 
Because a {@code TreeBasedTable} has unique sorted values for a given row, this method
   * returns a {@link SortedMap}, instead of the {@link Map} specified in the {@link Table}
   * interface.
   *
   * @since 10.0 (mostly
   *     source-compatible since 7.0)
   */
  @Override
  public SortedMap row(R rowKey) {
    return new TreeRow(rowKey);
  }

  private class TreeRow extends Row implements SortedMap {
    @CheckForNull final C lowerBound;
    @CheckForNull final C upperBound;

    TreeRow(R rowKey) {
      this(rowKey, null, null);
    }

    TreeRow(R rowKey, @CheckForNull C lowerBound, @CheckForNull C upperBound) {
      super(rowKey);
      this.lowerBound = lowerBound;
      this.upperBound = upperBound;
      checkArgument(
          lowerBound == null || upperBound == null || compare(lowerBound, upperBound) <= 0);
    }

    @Override
    public SortedSet keySet() {
      return new Maps.SortedKeySet<>(this);
    }

    @Override
    public Comparator comparator() {
      return columnComparator();
    }

    int compare(Object a, Object b) {
      // pretend we can compare anything
      @SuppressWarnings("unchecked")
      Comparator cmp = (Comparator) comparator();
      return cmp.compare(a, b);
    }

    boolean rangeContains(@CheckForNull Object o) {
      return o != null
          && (lowerBound == null || compare(lowerBound, o) <= 0)
          && (upperBound == null || compare(upperBound, o) > 0);
    }

    @Override
    public SortedMap subMap(C fromKey, C toKey) {
      checkArgument(rangeContains(checkNotNull(fromKey)) && rangeContains(checkNotNull(toKey)));
      return new TreeRow(rowKey, fromKey, toKey);
    }

    @Override
    public SortedMap headMap(C toKey) {
      checkArgument(rangeContains(checkNotNull(toKey)));
      return new TreeRow(rowKey, lowerBound, toKey);
    }

    @Override
    public SortedMap tailMap(C fromKey) {
      checkArgument(rangeContains(checkNotNull(fromKey)));
      return new TreeRow(rowKey, fromKey, upperBound);
    }

    @Override
    public C firstKey() {
      updateBackingRowMapField();
      if (backingRowMap == null) {
        throw new NoSuchElementException();
      }
      return ((SortedMap) backingRowMap).firstKey();
    }

    @Override
    public C lastKey() {
      updateBackingRowMapField();
      if (backingRowMap == null) {
        throw new NoSuchElementException();
      }
      return ((SortedMap) backingRowMap).lastKey();
    }

    @CheckForNull transient SortedMap wholeRow;

    // If the row was previously empty, we check if there's a new row here every time we're queried.
    void updateWholeRowField() {
      if (wholeRow == null || (wholeRow.isEmpty() && backingMap.containsKey(rowKey))) {
        wholeRow = (SortedMap) backingMap.get(rowKey);
      }
    }

    @Override
    @CheckForNull
    SortedMap computeBackingRowMap() {
      updateWholeRowField();
      SortedMap map = wholeRow;
      if (map != null) {
        if (lowerBound != null) {
          map = map.tailMap(lowerBound);
        }
        if (upperBound != null) {
          map = map.headMap(upperBound);
        }
        return map;
      }
      return null;
    }

    @Override
    void maintainEmptyInvariant() {
      updateWholeRowField();
      if (wholeRow != null && wholeRow.isEmpty()) {
        backingMap.remove(rowKey);
        wholeRow = null;
        backingRowMap = null;
      }
    }

    @Override
    public boolean containsKey(@CheckForNull Object key) {
      return rangeContains(key) && super.containsKey(key);
    }

    @Override
    @CheckForNull
    public V put(C key, V value) {
      checkArgument(rangeContains(checkNotNull(key)));
      return super.put(key, value);
    }
  }

  // rowKeySet() and rowMap() are defined here so they appear in the Javadoc.

  @Override
  public SortedSet rowKeySet() {
    return super.rowKeySet();
  }

  @Override
  public SortedMap> rowMap() {
    return super.rowMap();
  }

  /** Overridden column iterator to return columns values in globally sorted order. */
  @Override
  Iterator createColumnKeyIterator() {
    Comparator comparator = columnComparator();

    Iterator merged =
        Iterators.mergeSorted(
            Iterables.transform(
                backingMap.values(), (Map input) -> input.keySet().iterator()),
            comparator);

    return new AbstractIterator() {
      @CheckForNull C lastValue;

      @Override
      @CheckForNull
      protected C computeNext() {
        while (merged.hasNext()) {
          C next = merged.next();
          boolean duplicate = lastValue != null && comparator.compare(next, lastValue) == 0;

          // Keep looping till we find a non-duplicate value.
          if (!duplicate) {
            lastValue = next;
            return lastValue;
          }
        }

        lastValue = null; // clear reference to unused data
        return endOfData();
      }
    };
  }

  private static final long serialVersionUID = 0;
}
    

    

    

            

    

            



    
    






    
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