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SudoRetrieveThingsResponse.java
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SudoRetrieveThingsResponse.java
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/*
* Copyright (c) 2017 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.things.api.commands.sudo;
import static org.eclipse.ditto.base.model.common.ConditionChecker.checkNotNull;
import java.util.Collections;
import java.util.List;
import java.util.Objects;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;
import org.eclipse.ditto.base.model.common.HttpStatus;
import org.eclipse.ditto.base.model.exceptions.DittoJsonException;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.base.model.json.FieldType;
import org.eclipse.ditto.base.model.json.JsonParsableCommandResponse;
import org.eclipse.ditto.base.model.json.JsonSchemaVersion;
import org.eclipse.ditto.base.model.signals.commands.AbstractCommandResponse;
import org.eclipse.ditto.base.model.signals.commands.CommandResponseHttpStatusValidator;
import org.eclipse.ditto.base.model.signals.commands.CommandResponseJsonDeserializer;
import org.eclipse.ditto.json.JsonArray;
import org.eclipse.ditto.json.JsonCollectors;
import org.eclipse.ditto.json.JsonField;
import org.eclipse.ditto.json.JsonFieldDefinition;
import org.eclipse.ditto.json.JsonFieldSelector;
import org.eclipse.ditto.json.JsonObject;
import org.eclipse.ditto.json.JsonObjectBuilder;
import org.eclipse.ditto.json.JsonValue;
import org.eclipse.ditto.things.model.Thing;
import org.eclipse.ditto.things.model.ThingsModelFactory;
import org.eclipse.ditto.utils.jsr305.annotations.AllValuesAreNonnullByDefault;
/**
* Response to a {@link SudoRetrieveThings} command.
*/
@Immutable
@AllValuesAreNonnullByDefault
@JsonParsableCommandResponse(type = SudoRetrieveThingsResponse.TYPE)
public final class SudoRetrieveThingsResponse extends AbstractCommandResponse<SudoRetrieveThingsResponse>
implements ThingSudoQueryCommandResponse<SudoRetrieveThingsResponse> {
/**
* Name of the response.
*/
public static final String NAME = "sudoRetrieveThingsResponse";
/**
* Type of this command.
*/
public static final String TYPE = TYPE_PREFIX + NAME;
static final JsonFieldDefinition<JsonArray> JSON_THINGS =
JsonFieldDefinition.ofJsonArray("payload/things", FieldType.REGULAR, JsonSchemaVersion.V_2);
static final JsonFieldDefinition<String> JSON_THINGS_PLAIN_JSON =
JsonFieldDefinition.ofString("payload/thingsPlainJson", FieldType.REGULAR, JsonSchemaVersion.V_2);
private static final HttpStatus HTTP_STATUS = HttpStatus.OK;
private static final CommandResponseJsonDeserializer<SudoRetrieveThingsResponse> JSON_DESERIALIZER =
CommandResponseJsonDeserializer.newInstance(TYPE,
context -> {
final var jsonObject = context.getJsonObject();
final var thingsJsonArray = jsonObject.getValue(JSON_THINGS).orElse(null);
final var plainJsonString = jsonObject.getValue(JSON_THINGS_PLAIN_JSON)
.orElseGet(() -> String.valueOf(thingsJsonArray));
return new SudoRetrieveThingsResponse(thingsJsonArray,
plainJsonString,
context.getDeserializedHttpStatus(),
context.getDittoHeaders());
});
private final String thingsPlainJson;
@Nullable private JsonArray things;
private SudoRetrieveThingsResponse(@Nullable final JsonArray things,
final String thingsPlainJson,
final HttpStatus httpStatus,
final DittoHeaders dittoHeaders) {
super(TYPE,
CommandResponseHttpStatusValidator.validateHttpStatus(httpStatus,
Collections.singleton(HTTP_STATUS),
SudoRetrieveThingsResponse.class),
dittoHeaders);
this.thingsPlainJson = checkNotNull(thingsPlainJson, "thingsPlainJson");
this.things = things;
}
/**
* Creates a new instance of {@code SudoRetrieveThingsResponse}.
*
* @param thingsPlainJson the retrieved Things.
* @param dittoHeaders the headers of the preceding command.
* @return the response.
* @throws NullPointerException if any argument is {@code null}.
*/
public static SudoRetrieveThingsResponse of(final String thingsPlainJson, final DittoHeaders dittoHeaders) {
return new SudoRetrieveThingsResponse(null, thingsPlainJson, HTTP_STATUS, dittoHeaders);
}
/**
* Creates a response to a {@code SudoRetrieveThingsResponse} command.
*
* @param thingsPlainJson the retrieved Things.
* @param dittoHeaders the headers of the preceding command.
* @return the response.
* @throws NullPointerException if any argument is {@code null}.
*/
public static SudoRetrieveThingsResponse of(final List<String> thingsPlainJson, final DittoHeaders dittoHeaders) {
return new SudoRetrieveThingsResponse(null,
thingsPlainJson.stream().collect(Collectors.joining(",", "[", "]")),
HTTP_STATUS,
dittoHeaders);
}
/**
* Creates a new instance of {@code SudoRetrieveThingsResponse}.
*
* @param things the retrieved Things.
* @param dittoHeaders the headers of the preceding command.
* @return the response.
* @throws NullPointerException if any argument is {@code null}.
*/
public static SudoRetrieveThingsResponse of(final JsonArray things, final DittoHeaders dittoHeaders) {
return new SudoRetrieveThingsResponse(things, things.toString(), HTTP_STATUS, dittoHeaders);
}
/**
* Creates a new instance of {@code SudoRetrieveThingsResponse}.
*
* @param things the Things.
* @param predicate the predicate to apply to the things when transforming to JSON.
* @param dittoHeaders the command headers of the request.
* @return a new SudoRetrieveThingsResponse object.
* @throws NullPointerException if any argument is {@code null}.
*/
public static SudoRetrieveThingsResponse of(final List<Thing> things,
final Predicate<JsonField> predicate,
final DittoHeaders dittoHeaders) {
checkNotNull(things, "things");
final var thingsArray = things.stream()
.map(thing -> thing.toJson(dittoHeaders.getSchemaVersion().orElse(JsonSchemaVersion.LATEST), predicate))
.collect(JsonCollectors.valuesToArray());
return new SudoRetrieveThingsResponse(thingsArray, thingsArray.toString(), HTTP_STATUS, dittoHeaders);
}
/**
* Creates a new instance of {@code SudoRetrieveThingsResponse}.
*
* @param things the Things.
* @param fieldSelector the JsonFieldSelector to apply to the passed things when transforming to JSON.
* @param predicate the predicate to apply to the things when transforming to JSON.
* @param dittoHeaders the command headers of the request.
* @return a new SudoRetrieveThingsResponse object.
* @throws NullPointerException if any argument is {@code null}.
*/
public static SudoRetrieveThingsResponse of(final List<Thing> things,
final JsonFieldSelector fieldSelector,
final Predicate<JsonField> predicate,
final DittoHeaders dittoHeaders) {
checkNotNull(things, "things");
final var thingsArray = things.stream()
.map(thing -> thing.toJson(dittoHeaders.getSchemaVersion().orElse(JsonSchemaVersion.LATEST),
fieldSelector,
predicate))
.collect(JsonCollectors.valuesToArray());
return new SudoRetrieveThingsResponse(thingsArray, thingsArray.toString(), HTTP_STATUS, dittoHeaders);
}
/**
* Creates a new {@code SudoRetrieveThingsResponse} from a JSON string.
*
* @param jsonString the JSON string of which a new SudoRetrieveThingsResponse instance is to be created.
* @param dittoHeaders the optional command headers of the request.
* @return the {@code SudoRetrieveThingsResponse} which was created from the given JSON string.
* @throws NullPointerException if {@code dittoHeaders} is {@code null}.
* @throws DittoJsonException if the passed in {@code jsonString} was {@code null}, empty or not in the expected
* 'SudoRetrieveThingsResponse' format.
*/
public static SudoRetrieveThingsResponse fromJson(final String jsonString, final DittoHeaders dittoHeaders) {
final var jsonObject = DittoJsonException.wrapJsonRuntimeException(() -> JsonObject.of(jsonString));
return fromJson(jsonObject, dittoHeaders);
}
/**
* Creates a new {@code SudoRetrieveThingsResponse} from a JSON object.
*
* @param jsonObject the JSON object of which a new SudoRetrieveThingsResponse instance is to be created.
* @param dittoHeaders the optional command headers of the request.
* @return the {@code SudoRetrieveThingsResponse} which was created from the given JSON object.
* @throws NullPointerException if any argument is {@code null}.
* @throws org.eclipse.ditto.json.JsonParseException if the passed in {@code jsonObject} was not in the expected
* 'SudoRetrieveThingsResponse' format.
*/
public static SudoRetrieveThingsResponse fromJson(final JsonObject jsonObject, final DittoHeaders dittoHeaders) {
return JSON_DESERIALIZER.deserialize(jsonObject, dittoHeaders);
}
/**
* Returns the {@code Thing}s.
*
* @return the Things.
*/
public List<Thing> getThings() {
return getThingStream(lazyLoadThingsJsonArray()).toList();
}
private static Stream<Thing> getThingStream(final JsonArray thingsArray) {
return thingsArray.stream()
.filter(JsonValue::isObject)
.map(JsonValue::asObject)
.map(ThingsModelFactory::newThing);
}
private JsonArray lazyLoadThingsJsonArray() {
if (things == null) {
things = JsonArray.of(thingsPlainJson);
}
return things;
}
@Override
public JsonValue getEntity(final JsonSchemaVersion schemaVersion) {
return lazyLoadThingsJsonArray();
}
@Override
public SudoRetrieveThingsResponse setEntity(final JsonValue entity) {
checkNotNull(entity, "entity");
return of(entity.asArray(), getDittoHeaders());
}
@Override
public SudoRetrieveThingsResponse setDittoHeaders(final DittoHeaders dittoHeaders) {
return of(thingsPlainJson, dittoHeaders);
}
@Override
protected void appendPayload(final JsonObjectBuilder jsonObjectBuilder,
final JsonSchemaVersion schemaVersion,
final Predicate<JsonField> thePredicate) {
final var predicate = schemaVersion.and(thePredicate);
jsonObjectBuilder.set(JSON_THINGS_PLAIN_JSON, thingsPlainJson, predicate);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), things, thingsPlainJson);
}
@SuppressWarnings({"squid:MethodCyclomaticComplexity", "squid:S1067", "pmd:SimplifyConditional"})
@Override
public boolean equals(@Nullable final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final SudoRetrieveThingsResponse that = (SudoRetrieveThingsResponse) o;
return that.canEqual(this) && Objects.equals(things, that.things)
&& Objects.equals(thingsPlainJson, that.thingsPlainJson) && super.equals(that);
}
@Override
protected boolean canEqual(@Nullable final Object other) {
return other instanceof SudoRetrieveThingsResponse;
}
@Override
public String toString() {
return getClass().getSimpleName() + " [" + super.toString() + ", things=" + things + ", thingsPlainJson=" +
thingsPlainJson + "]";
}
}