/*
* 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.facebook.presto.kafka;
import com.facebook.presto.spi.ColumnMetadata;
import com.facebook.presto.spi.type.Type;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.base.Objects;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Strings.isNullOrEmpty;
/**
* Json description to parse a single field from a Kafka topic message. See {@link com.facebook.presto.kafka.KafkaTopicDescription} for more details.
*/
public final class KafkaTopicFieldDescription
{
private final String name;
private final Type type;
private final String mapping;
private final String comment;
private final String dataFormat;
private final String formatHint;
private final boolean hidden;
@JsonCreator
public KafkaTopicFieldDescription(
@JsonProperty("name") String name,
@JsonProperty("type") Type type,
@JsonProperty("mapping") String mapping,
@JsonProperty("comment") String comment,
@JsonProperty("dataFormat") String dataFormat,
@JsonProperty("formatHint") String formatHint,
@JsonProperty("hidden") boolean hidden)
{
checkArgument(!isNullOrEmpty(name), "name is null or is empty");
this.name = name;
this.type = checkNotNull(type, "type is null");
this.mapping = mapping;
this.comment = comment;
this.dataFormat = dataFormat;
this.formatHint = formatHint;
this.hidden = hidden;
}
@JsonProperty
public String getName()
{
return name;
}
@JsonProperty
public Type getType()
{
return type;
}
@JsonProperty
public String getMapping()
{
return mapping;
}
@JsonProperty
public String getComment()
{
return comment;
}
@JsonProperty
public String getDataFormat()
{
return dataFormat;
}
@JsonProperty
public String getFormatHint()
{
return formatHint;
}
@JsonProperty
public boolean isHidden()
{
return hidden;
}
KafkaColumnHandle getColumnHandle(String connectorId, boolean keyDecoder, int index)
{
return new KafkaColumnHandle(connectorId,
index,
getName(),
getType(),
getMapping(),
getDataFormat(),
getFormatHint(),
keyDecoder,
isHidden(),
false);
}
ColumnMetadata getColumnMetadata(int index)
{
return new ColumnMetadata(getName(), getType(), index, false, getComment(), isHidden());
}
@Override
public int hashCode()
{
return Objects.hashCode(name, type, mapping, dataFormat, formatHint, hidden);
}
@Override
public boolean equals(Object obj)
{
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
KafkaTopicFieldDescription other = (KafkaTopicFieldDescription) obj;
return Objects.equal(this.name, other.name) &&
Objects.equal(this.type, other.type) &&
Objects.equal(this.mapping, other.mapping) &&
Objects.equal(this.dataFormat, other.dataFormat) &&
Objects.equal(this.formatHint, other.formatHint) &&
Objects.equal(this.hidden, other.hidden);
}
@Override
public String toString()
{
return Objects.toStringHelper(this)
.add("name", name)
.add("type", type)
.add("mapping", mapping)
.add("dataFormat", dataFormat)
.add("formatHint", formatHint)
.add("hidden", hidden)
.toString();
}
}