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Add a BaseCompositePhysicalTable (#242)
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fili-core/src/main/java/com/yahoo/bard/webservice/table/BaseCompositePhysicalTable.java
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| // Copyright 2017 Yahoo Inc. | ||
| // Licensed under the terms of the Apache license. Please see LICENSE.md file distributed with this work for terms. | ||
| package com.yahoo.bard.webservice.table; | ||
|
|
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| import com.yahoo.bard.webservice.data.config.names.TableName; | ||
| import com.yahoo.bard.webservice.data.time.ZonedTimeGrain; | ||
| import com.yahoo.bard.webservice.table.availability.Availability; | ||
|
|
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
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| import java.util.Map; | ||
| import java.util.Set; | ||
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|
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| import javax.validation.constraints.NotNull; | ||
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| /** | ||
| * An implementation of BasePhysicalTable that contains multiple tables. | ||
| */ | ||
| public class BaseCompositePhysicalTable extends BasePhysicalTable { | ||
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|
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| private static final Logger LOG = LoggerFactory.getLogger(BaseCompositePhysicalTable.class); | ||
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| /** | ||
| * Constructor. | ||
| * | ||
| * @param name Name that represents set of fact table names that are put together under this table | ||
| * @param timeGrain The time grain of the table. The time grain has to satisfy all grains of the tables | ||
| * @param columns The columns for this table | ||
| * @param physicalTables A set of PhysicalTables that are put together under this table. The | ||
| * tables shall have zoned time grains that all satisfy the provided timeGrain | ||
| * @param logicalToPhysicalColumnNames Mappings from logical to physical names | ||
| * @param availability The Availability of this table | ||
| */ | ||
| public BaseCompositePhysicalTable( | ||
| @NotNull TableName name, | ||
| @NotNull ZonedTimeGrain timeGrain, | ||
| @NotNull Set<Column> columns, | ||
| @NotNull Set<PhysicalTable> physicalTables, | ||
| @NotNull Map<String, String> logicalToPhysicalColumnNames, | ||
| @NotNull Availability availability | ||
| ) { | ||
| super( | ||
| name, | ||
| timeGrain, | ||
| columns, | ||
| logicalToPhysicalColumnNames, | ||
| availability | ||
| ); | ||
| verifyGrainSatisfiesAllTables(getSchema().getTimeGrain(), physicalTables, name); | ||
| } | ||
|
|
||
| /** | ||
| * Verifies that the coarsest ZonedTimeGrain satisfies all tables. | ||
| * | ||
| * @param coarsestTimeGrain The coarsest ZonedTimeGrain to be verified | ||
| * @param physicalTables A set of PhysicalTables whose ZonedTimeGrains are checked to make sure | ||
| * they all satisfies with the given coarsest ZonedTimeGrain | ||
| * @param name Name of the current MetricUnionCompositeTable that represents set of fact table names | ||
| * joined together | ||
| * | ||
| * @throws IllegalArgumentException when there is no mutually satisfying grain among the table's time grains | ||
| */ | ||
| private static void verifyGrainSatisfiesAllTables( | ||
| ZonedTimeGrain coarsestTimeGrain, | ||
| Set<PhysicalTable> physicalTables, | ||
| TableName name | ||
| ) throws IllegalArgumentException { | ||
| if (!physicalTables.stream() | ||
| .map(PhysicalTable::getSchema) | ||
| .map(PhysicalTableSchema::getTimeGrain) | ||
| .allMatch(coarsestTimeGrain::satisfies)) { | ||
| String message = String.format( | ||
| "There is no mutually satisfying grain among: %s for current table %s", | ||
| physicalTables, | ||
| name.asName() | ||
| ); | ||
| LOG.error(message); | ||
| throw new IllegalArgumentException(message); | ||
| } | ||
| } | ||
| } |
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