/*
 * Copyright 2017, TeamDev Ltd. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package io.spine.server.entity.storage;

import io.spine.server.entity.Entity;

import java.util.Collection;

/**
 *
 * @author Alexander Aleksandrov
 */
public class EntityColumns {

    private EntityColumns() {
        //
    }

    public static Collection<Column> getColumns(Class<? extends Entity<?, ?>> cls) {
        final Collection<Column> result = Columns.getColumns(cls);
        return result;
    }
}

@@ -1050,16 +1050,53 @@
 orage;%0A%0A
+import io.spine.annotation.Internal;%0A
 import i
@@ -1160,16 +1160,153 @@
 n;%0A%0A/**%0A
+ * A utility for accessing the Entity Columns extraction within the JDBC%0A * %7B@linkplain io.spine.server.storage.Storage%7D implementation.%0A
  *%0A * @a
@@ -1337,22 +1337,38 @@
 rov%0A */%0A
-public
+@Internal%0Apublic final
  class E
@@ -1423,23 +1423,362 @@
       //
-%0A    %7D%0A
+ Prevent utility class instantiation.%0A    %7D%0A%0A    /**%0A     * Retrieves the %7B@linkplain Column Entity Columns%7D from the given %7B@linkplain Entity%7D%0A     * %7B@linkplain Class class%7D description.%0A     *%0A     * @param cls the type of the %7B@link Entity%7D to get the Columns from%0A     * @return the Entity Columns declared within this %7B@link Entity%7D%0A     */
 %0A    pub

Add required Javadoc.