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MkItem.java
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MkItem.java
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/**
* Copyright (c) 2012-2016, 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.mock;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import com.amazonaws.services.dynamodbv2.model.AttributeValueUpdate;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.jcabi.aspects.Immutable;
import com.jcabi.aspects.Loggable;
import com.jcabi.dynamo.AttributeUpdates;
import com.jcabi.dynamo.Attributes;
import com.jcabi.dynamo.Conditions;
import com.jcabi.dynamo.Frame;
import com.jcabi.dynamo.Item;
import java.io.IOException;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import lombok.EqualsAndHashCode;
import lombok.ToString;
/**
* Mock version of {@link Item}.
*
* @author Yegor Bugayenko (yegor@tpc2.com)
* @version $Id$
* @since 0.10
*/
@Immutable
@ToString
@Loggable(Loggable.DEBUG)
@EqualsAndHashCode(of = { "data", "table", "attributes" })
final class MkItem implements Item {
/**
* Data.
*/
private final transient MkData data;
/**
* Table name.
*/
private final transient String table;
/**
* Attributes.
*/
private final transient Attributes attributes;
/**
* Public ctor.
* @param dta Data
* @param tbl Table
* @param attribs Map of attributes
*/
MkItem(final MkData dta, final String tbl, final Attributes attribs) {
this.data = dta;
this.table = tbl;
this.attributes = attribs;
}
@Override
public AttributeValue get(final String name) throws IOException {
return this.data.iterate(
this.table,
new Conditions().withAttributes(
this.attributes.only(this.data.keys(this.table))
)
).iterator().next().get(name);
}
@Override
public boolean has(final String name) throws IOException {
return this.data.iterate(
this.table,
new Conditions().withAttributes(
this.attributes.only(this.data.keys(this.table))
)
).iterator().next().containsKey(name.toLowerCase(Locale.ENGLISH));
}
@Override
public Map<String, AttributeValue> put(
final String name, final AttributeValueUpdate value)
throws IOException {
return this.put(
new ImmutableMap.Builder<String, AttributeValueUpdate>()
.put(name, value).build()
);
}
@Override
public Map<String, AttributeValue> put(
final Map<String, AttributeValueUpdate> attrs) throws IOException {
final Map<String, AttributeValue> keys =
new HashMap<String, AttributeValue>(0);
for (final String attr : this.data.keys(this.table)) {
keys.put(attr, this.attributes.get(attr));
}
try {
this.data.update(
this.table,
new Attributes(keys),
new AttributeUpdates(attrs)
);
} catch (final IOException ex) {
throw new IllegalStateException(ex);
}
return Maps.transformValues(
attrs,
new Function<AttributeValueUpdate, AttributeValue>() {
@Override
public AttributeValue apply(final AttributeValueUpdate update) {
return update.getValue();
}
}
);
}
@Override
public Frame frame() {
return new MkFrame(this.data, this.table);
}
}