io.druid.query.extraction.namespace.JDBCExtractionNamespace.java Source code

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Here is the source code for io.druid.query.extraction.namespace.JDBCExtractionNamespace.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  Metamarkets licenses this file
 * to you 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 io.druid.query.extraction.namespace;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import com.google.common.base.Preconditions;
import io.druid.metadata.MetadataStorageConnectorConfig;
import org.joda.time.Period;

import javax.annotation.Nullable;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;

/**
 *
 */
@JsonTypeName("jdbc")
public class JDBCExtractionNamespace implements ExtractionNamespace {

    @JsonProperty
    private final MetadataStorageConnectorConfig connectorConfig;
    @JsonProperty
    private final String table;
    @JsonProperty
    private final String keyColumn;
    @JsonProperty
    private final String valueColumn;
    @JsonProperty
    private final String tsColumn;
    @JsonProperty
    private final String namespace;
    @JsonProperty
    private final Period pollPeriod;

    @JsonCreator
    public JDBCExtractionNamespace(
            @NotNull @JsonProperty(value = "namespace", required = true) final String namespace,
            @NotNull @JsonProperty(value = "connectorConfig", required = true) final MetadataStorageConnectorConfig connectorConfig,
            @NotNull @JsonProperty(value = "table", required = true) final String table,
            @NotNull @JsonProperty(value = "keyColumn", required = true) final String keyColumn,
            @NotNull @JsonProperty(value = "valueColumn", required = true) final String valueColumn,
            @Nullable @JsonProperty(value = "tsColumn", required = false) final String tsColumn,
            @Min(0) @Nullable @JsonProperty(value = "pollPeriod", required = false) final Period pollPeriod) {
        this.connectorConfig = Preconditions.checkNotNull(connectorConfig, "connectorConfig");
        Preconditions.checkNotNull(connectorConfig.getConnectURI(), "connectorConfig.connectURI");
        this.table = Preconditions.checkNotNull(table, "table");
        this.keyColumn = Preconditions.checkNotNull(keyColumn, "keyColumn");
        this.valueColumn = Preconditions.checkNotNull(valueColumn, "valueColumn");
        this.tsColumn = tsColumn;
        this.namespace = Preconditions.checkNotNull(namespace, "namespace");
        this.pollPeriod = pollPeriod == null ? new Period(0L) : pollPeriod;
    }

    @Override
    public String getNamespace() {
        return namespace;
    }

    public MetadataStorageConnectorConfig getConnectorConfig() {
        return connectorConfig;
    }

    public String getTable() {
        return table;
    }

    public String getKeyColumn() {
        return keyColumn;
    }

    public String getValueColumn() {
        return valueColumn;
    }

    public String getTsColumn() {
        return tsColumn;
    }

    @Override
    public long getPollMs() {
        return pollPeriod.toStandardDuration().getMillis();
    }

    @Override
    public String toString() {
        return String.format(
                "JDBCExtractionNamespace = { namespace = %s, connectorConfig = { %s }, table = %s, keyColumn = %s, valueColumn = %s, tsColumn = %s, pollPeriod = %s}",
                namespace, connectorConfig.toString(), table, keyColumn, valueColumn, tsColumn, pollPeriod);
    }

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

        JDBCExtractionNamespace that = (JDBCExtractionNamespace) o;

        if (!connectorConfig.equals(that.connectorConfig)) {
            return false;
        }
        if (!table.equals(that.table)) {
            return false;
        }
        if (!keyColumn.equals(that.keyColumn)) {
            return false;
        }
        if (!valueColumn.equals(that.valueColumn)) {
            return false;
        }
        if (tsColumn != null ? !tsColumn.equals(that.tsColumn) : that.tsColumn != null) {
            return false;
        }
        if (!namespace.equals(that.namespace)) {
            return false;
        }
        return pollPeriod.equals(that.pollPeriod);

    }

    @Override
    public int hashCode() {
        int result = connectorConfig.hashCode();
        result = 31 * result + table.hashCode();
        result = 31 * result + keyColumn.hashCode();
        result = 31 * result + valueColumn.hashCode();
        result = 31 * result + (tsColumn != null ? tsColumn.hashCode() : 0);
        result = 31 * result + namespace.hashCode();
        result = 31 * result + pollPeriod.hashCode();
        return result;
    }
}