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ForeignKey.java
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ForeignKey.java
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/*
* Copyright 2023 Google LLC
*
* 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.google.cloud.bigquery;
import com.google.auto.value.AutoValue;
import com.google.common.annotations.VisibleForTesting;
import java.io.Serializable;
import java.util.List;
import java.util.stream.Collectors;
import javax.annotation.Nullable;
@AutoValue
public abstract class ForeignKey implements Serializable {
public static ForeignKey.Builder newBuilder() {
return new AutoValue_ForeignKey.Builder();
}
static ForeignKey fromPb(
com.google.api.services.bigquery.model.TableConstraints.ForeignKeys foreignKey) {
ForeignKey.Builder builder = newBuilder();
if (foreignKey.getName() != null) {
builder.setName(foreignKey.getName());
}
if (foreignKey.getReferencedTable() != null) {
com.google.api.services.bigquery.model.TableConstraints.ForeignKeys.ReferencedTable
referencedTable = foreignKey.getReferencedTable();
builder.setReferencedTable(
TableId.of(
referencedTable.getProjectId(),
referencedTable.getDatasetId(),
referencedTable.getTableId()));
}
if (foreignKey.getColumnReferences() != null) {
builder.setColumnReferences(
foreignKey.getColumnReferences().stream()
.map(ColumnReference::fromPb)
.collect(Collectors.toList()));
}
return builder.build();
}
com.google.api.services.bigquery.model.TableConstraints.ForeignKeys toPb() {
com.google.api.services.bigquery.model.TableConstraints.ForeignKeys foreignKey =
new com.google.api.services.bigquery.model.TableConstraints.ForeignKeys();
if (getName() != null) {
foreignKey.setName(getName());
}
if (getReferencedTable() != null) {
TableId referencedTableId = getReferencedTable();
foreignKey.setReferencedTable(
new com.google.api.services.bigquery.model.TableConstraints.ForeignKeys.ReferencedTable()
.setTableId(referencedTableId.getTable())
.setDatasetId(referencedTableId.getDataset())
.setProjectId(referencedTableId.getProject()));
}
if (getColumnReferences() != null) {
foreignKey.setColumnReferences(
getColumnReferences().stream().map(ColumnReference::toPb).collect(Collectors.toList()));
}
return foreignKey;
}
@Nullable
public abstract String getName();
@Nullable
public abstract TableId getReferencedTable();
@Nullable
public abstract List<ColumnReference> getColumnReferences();
/** Returns a builder for foreign key. */
@VisibleForTesting
public abstract ForeignKey.Builder toBuilder();
@AutoValue.Builder
public abstract static class Builder {
/** The name of the foreign key. * */
public abstract ForeignKey.Builder setName(String name);
/** The table referenced by this foreign key. * */
public abstract ForeignKey.Builder setReferencedTable(TableId referencedTable);
/** The set of column references for this foreign key. * */
public abstract ForeignKey.Builder setColumnReferences(List<ColumnReference> columnReferences);
/** Creates a {@code ForignKey} object. */
public abstract ForeignKey build();
}
}