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Presto - Redis Connector
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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.redis;

import com.facebook.presto.spi.ConnectorTableHandle;
import com.facebook.presto.spi.SchemaTableName;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

import java.util.Objects;

import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.Objects.requireNonNull;

/**
 * Redis specific {@link ConnectorTableHandle}.
 */
public final class RedisTableHandle
        implements ConnectorTableHandle
{
    /**
     * connector id
     */
    private final String connectorId;

    /**
     * The schema name for this table. Is set through configuration and read
     * using {@link RedisConnectorConfig#getDefaultSchema()}. Usually 'default'.
     */
    private final String schemaName;

    /**
     * The table name used by presto.
     */
    private final String tableName;

    private final String keyDataFormat;
    private final String keyName;

    private final String valueDataFormat;

    @JsonCreator
    public RedisTableHandle(
            @JsonProperty("connectorId") String connectorId,
            @JsonProperty("schemaName") String schemaName,
            @JsonProperty("tableName") String tableName,
            @JsonProperty("keyDataFormat") String keyDataFormat,
            @JsonProperty("valueDataFormat") String valueDataFormat,
            @JsonProperty("keyName") String keyName)
    {
        this.connectorId = requireNonNull(connectorId, "connectorId is null");
        this.schemaName = requireNonNull(schemaName, "schemaName is null");
        this.tableName = requireNonNull(tableName, "tableName is null");
        this.keyDataFormat = requireNonNull(keyDataFormat, "keyDataFormat is null");
        this.valueDataFormat = requireNonNull(valueDataFormat, "valueDataFormat is null");
        this.keyName = keyName;
    }

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

    @JsonProperty
    public String getSchemaName()
    {
        return schemaName;
    }

    @JsonProperty
    public String getTableName()
    {
        return tableName;
    }

    @JsonProperty
    public String getKeyDataFormat()
    {
        return keyDataFormat;
    }

    @JsonProperty
    public String getKeyName()
    {
        return keyName;
    }

    @JsonProperty
    public String getValueDataFormat()
    {
        return valueDataFormat;
    }

    public SchemaTableName toSchemaTableName()
    {
        return new SchemaTableName(schemaName, tableName);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(connectorId, schemaName, tableName, keyDataFormat, valueDataFormat, keyName);
    }

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

        RedisTableHandle other = (RedisTableHandle) obj;
        return Objects.equals(this.connectorId, other.connectorId)
                && Objects.equals(this.schemaName, other.schemaName)
                && Objects.equals(this.tableName, other.tableName)
                && Objects.equals(this.keyDataFormat, other.keyDataFormat)
                && Objects.equals(this.valueDataFormat, other.valueDataFormat)
                && Objects.equals(this.keyName, other.keyName);
    }

    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("connectorId", connectorId)
                .add("schemaName", schemaName)
                .add("tableName", tableName)
                .add("keyDataFormat", keyDataFormat)
                .add("valueDataFormat", valueDataFormat)
                .add("keyName", keyName)
                .toString();
    }
}