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Object Oriented Wrapper of Amazon DynamoDB SDK
/**
* Copyright (c) 2012-2017, jcabi.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met: 1) Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer. 2) Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution. 3) Neither the name of the jcabi.com nor
* the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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 HOLDER 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 com.jcabi.dynamo;
import com.amazonaws.services.dynamodbv2.model.AttributeAction;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.AttributeValueUpdate;
import com.google.common.base.Joiner;
import com.jcabi.aspects.Immutable;
import com.jcabi.aspects.Loggable;
import com.jcabi.immutable.ArrayMap;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import lombok.EqualsAndHashCode;
/**
* DynamoDB item attribute updates.
*
* @author Yegor Bugayenko ([email protected])
* @version $Id: dd6c135e283a8d5fa753bc6da97a066e09882205 $
* @since 0.12
*/
@Immutable
@Loggable(Loggable.DEBUG)
@EqualsAndHashCode(of = "attrs")
@SuppressWarnings
(
{
"PMD.TooManyMethods",
"PMD.AvoidInstantiatingObjectsInLoops"
}
)
public final class AttributeUpdates
implements Map {
/**
* Encapsulated AttributeUpdates.
*/
private final transient ArrayMap attrs;
/**
* Private ctor.
*/
public AttributeUpdates() {
this(new ArrayMap());
}
/**
* Private ctor.
* @param map Map of them
*/
public AttributeUpdates(final Map map) {
this.attrs = new ArrayMap(map);
}
/**
* With this attribute.
* @param name Attribute name
* @param value The value
* @return AttributeUpdates
*/
public AttributeUpdates with(final String name,
final AttributeValueUpdate value) {
return new AttributeUpdates(
this.attrs.with(String.format(Locale.ENGLISH, name), value)
);
}
/**
* With this attribute.
* @param name Attribute name
* @param value The value
* @return AttributeUpdates
* @since 0.14.3
*/
public AttributeUpdates with(final String name,
final AttributeValue value) {
return this.with(
name,
new AttributeValueUpdate(value, AttributeAction.PUT)
);
}
/**
* With this attribute.
* @param name Attribute name
* @param value The value
* @return AttributeUpdates
* @since 0.14.3
*/
public AttributeUpdates with(final String name, final Object value) {
final AttributeValue attr;
if (value instanceof Long || value instanceof Integer) {
attr = new AttributeValue().withN(value.toString());
} else {
attr = new AttributeValue(value.toString());
}
return this.with(name, attr);
}
/**
* With these AttributeUpdates.
* @param map AttributeUpdates to add
* @return AttributeUpdates
*/
public AttributeUpdates with(final Map map) {
final ConcurrentMap attribs =
new ConcurrentHashMap(map.size());
for (final Map.Entry entry
: map.entrySet()) {
attribs.put(
String.format(Locale.ENGLISH, entry.getKey()),
entry.getValue()
);
}
return new AttributeUpdates(this.attrs.with(attribs));
}
@Override
public String toString() {
final Collection terms =
new ArrayList(this.attrs.size());
for (final Map.Entry attr
: this.attrs.entrySet()) {
terms.add(
String.format(
"%s=%s",
attr.getKey(),
attr.getValue()
)
);
}
return Joiner.on("; ").join(terms);
}
@Override
public int size() {
return this.attrs.size();
}
@Override
public boolean isEmpty() {
return this.attrs.isEmpty();
}
@Override
public boolean containsKey(final Object key) {
return this.attrs.containsKey(
String.format(Locale.ENGLISH, key.toString())
);
}
@Override
public boolean containsValue(final Object value) {
return this.attrs.containsValue(value);
}
@Override
public AttributeValueUpdate get(final Object key) {
return this.attrs.get(
String.format(Locale.ENGLISH, key.toString())
);
}
@Override
public Set keySet() {
return this.attrs.keySet();
}
@Override
public Collection values() {
return this.attrs.values();
}
@Override
public Set> entrySet() {
return this.attrs.entrySet();
}
@Override
public AttributeValueUpdate put(final String key,
final AttributeValueUpdate value) {
throw new UnsupportedOperationException(
"AttributeUpdates class is immutable, can't do #put()"
);
}
@Override
public AttributeValueUpdate remove(final Object key) {
throw new UnsupportedOperationException(
"AttributeUpdates class is immutable, can't do #remove()"
);
}
@Override
public void putAll(
final Map map) {
throw new UnsupportedOperationException(
"AttributeUpdates class is immutable, can't do #putAll()"
);
}
@Override
public void clear() {
throw new UnsupportedOperationException(
"AttributeUpdates class is immutable, can't do #clear()"
);
}
}