com.facebook.presto.kinesis.KinesisColumnHandle.java Source code

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/*
 * 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.kinesis;

import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkNotNull;

import com.facebook.presto.spi.ColumnMetadata;
import com.facebook.presto.spi.ColumnHandle;
import com.facebook.presto.spi.type.Type;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.Objects;

/**
 * Kinesis version of ConnectoColumnHandle. Keeps all the data of the columns of table formed from data received
 * from kinesis.
 *
 */
public class KinesisColumnHandle implements ColumnHandle, Comparable<KinesisColumnHandle> {
    private String connectorId;
    private final int ordinalPosition;

    /**
     * Column Name
     */
    private final String name;

    /**
     * Column type
     */
    private final Type type;

    /**
     * Mapping hint for the decoder. Can be null.
     */
    private final String mapping;

    /**
     * Data format to use (selects the decoder). Can be null.
     */
    private final String dataFormat;

    /**
     * Additional format hint for the selected decoder. Selects a decoder subtype (e.g. which timestamp decoder).
     */
    private final String formatHint;

    /**
     * True if the column should be hidden.
     */
    private final boolean hidden;

    /**
     * True if the column is internal to the connector and not defined by a topic definition.
     */
    private final boolean internal;

    @JsonCreator
    public KinesisColumnHandle(@JsonProperty("connectorId") String connectorId,
            @JsonProperty("ordinalPosition") int ordinalPosition, @JsonProperty("name") String name,
            @JsonProperty("type") Type type, @JsonProperty("mapping") String mapping,
            @JsonProperty("dataFormat") String dataFormat, @JsonProperty("formatHint") String formatHint,
            @JsonProperty("hidden") boolean hidden, @JsonProperty("internal") boolean internal) {
        this.connectorId = checkNotNull(connectorId, "connectorId is null");
        this.ordinalPosition = ordinalPosition;
        this.name = checkNotNull(name, "name is null");
        this.type = checkNotNull(type, "type is null");
        this.mapping = mapping;
        this.dataFormat = dataFormat;
        this.formatHint = formatHint;
        this.hidden = hidden;
        this.internal = internal;
    }

    @JsonProperty
    public String getConnectorId() {
        return connectorId;
    }

    @JsonProperty
    public int getOrdinalPosition() {
        return ordinalPosition;
    }

    @JsonProperty
    public String getName() {
        return name;
    }

    @JsonProperty
    public Type getType() {
        return type;
    }

    @JsonProperty
    public String getMapping() {
        return mapping;
    }

    @JsonProperty
    public String getDataFormat() {
        return dataFormat;
    }

    @JsonProperty
    public String getFormatHint() {
        return formatHint;
    }

    @JsonProperty
    public boolean isHidden() {
        return hidden;
    }

    @JsonProperty
    public boolean isInternal() {
        return internal;
    }

    ColumnMetadata getColumnMetadata() {
        return new ColumnMetadata(name, type, null, hidden); // name/type/comment/hidden
    }

    @Override
    public int hashCode() {
        return Objects.hash(connectorId, ordinalPosition, name, type, mapping, dataFormat, formatHint, hidden,
                internal);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }

        KinesisColumnHandle other = (KinesisColumnHandle) obj;
        return Objects.equals(this.connectorId, other.connectorId)
                && Objects.equals(this.ordinalPosition, other.ordinalPosition)
                && Objects.equals(this.name, other.name) && Objects.equals(this.type, other.type)
                && Objects.equals(this.mapping, other.mapping) && Objects.equals(this.dataFormat, other.dataFormat)
                && Objects.equals(this.formatHint, other.formatHint) && Objects.equals(this.hidden, other.hidden)
                && Objects.equals(this.internal, other.internal);
    }

    @Override
    public int compareTo(KinesisColumnHandle otherHandle) {
        return Integer.compare(this.getOrdinalPosition(), otherHandle.getOrdinalPosition());
    }

    @Override
    public String toString() {
        return toStringHelper(this).add("connectorId", connectorId).add("ordinalPosition", ordinalPosition)
                .add("name", name).add("type", type).add("mapping", mapping).add("dataFormat", dataFormat)
                .add("formatHint", formatHint).add("hidden", hidden).add("internal", internal).toString();
    }
}