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A universal transaction manager that achieves database-agnostic transactions and distributed transactions that span multiple databases
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package com.scalar.db.api;
import static com.google.common.base.Preconditions.checkNotNull;
import com.scalar.db.api.OperationBuilder.ClearClusteringKey;
import com.scalar.db.api.OperationBuilder.ClearNamespace;
import com.scalar.db.api.OperationBuilder.ClearValues;
import com.scalar.db.api.OperationBuilder.ClusteringKey;
import com.scalar.db.api.OperationBuilder.PartitionKeyBuilder;
import com.scalar.db.api.OperationBuilder.TableBuilder;
import com.scalar.db.api.OperationBuilder.Values;
import com.scalar.db.io.BigIntColumn;
import com.scalar.db.io.BlobColumn;
import com.scalar.db.io.BooleanColumn;
import com.scalar.db.io.Column;
import com.scalar.db.io.DoubleColumn;
import com.scalar.db.io.FloatColumn;
import com.scalar.db.io.IntColumn;
import com.scalar.db.io.Key;
import com.scalar.db.io.TextColumn;
import java.nio.ByteBuffer;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.annotation.Nullable;
public class InsertBuilder {
public static class Namespace
implements OperationBuilder.Namespace, OperationBuilder.Table {
Namespace() {}
@Override
public Table namespace(String namespaceName) {
checkNotNull(namespaceName);
return new Table(namespaceName);
}
@Override
public PartitionKey table(String tableName) {
checkNotNull(tableName);
return new PartitionKey(null, tableName);
}
}
public static class Table extends TableBuilder {
private Table(String namespaceName) {
super(namespaceName);
}
@Override
public PartitionKey table(String tableName) {
checkNotNull(tableName);
return new PartitionKey(namespace, tableName);
}
}
public static class PartitionKey extends PartitionKeyBuilder {
private PartitionKey(@Nullable String namespaceName, String tableName) {
super(namespaceName, tableName);
}
@Override
public Buildable partitionKey(Key partitionKey) {
checkNotNull(partitionKey);
return new Buildable(namespaceName, tableName, partitionKey);
}
}
public static class Buildable extends OperationBuilder.Buildable
implements ClusteringKey, Values {
final Map> columns = new LinkedHashMap<>();
@Nullable Key clusteringKey;
private Buildable(@Nullable String namespace, String table, Key partitionKey) {
super(namespace, table, partitionKey);
}
@Override
public Buildable clusteringKey(Key clusteringKey) {
checkNotNull(clusteringKey);
this.clusteringKey = clusteringKey;
return this;
}
@Override
public Buildable booleanValue(String columnName, boolean value) {
columns.put(columnName, BooleanColumn.of(columnName, value));
return this;
}
@Override
public Buildable booleanValue(String columnName, @Nullable Boolean value) {
if (value != null) {
return booleanValue(columnName, value.booleanValue());
}
columns.put(columnName, BooleanColumn.ofNull(columnName));
return this;
}
@Override
public Buildable intValue(String columnName, int value) {
columns.put(columnName, IntColumn.of(columnName, value));
return this;
}
@Override
public Buildable intValue(String columnName, @Nullable Integer value) {
if (value != null) {
return intValue(columnName, value.intValue());
}
columns.put(columnName, IntColumn.ofNull(columnName));
return this;
}
@Override
public Buildable bigIntValue(String columnName, long value) {
columns.put(columnName, BigIntColumn.of(columnName, value));
return this;
}
@Override
public Buildable bigIntValue(String columnName, @Nullable Long value) {
if (value != null) {
return bigIntValue(columnName, value.longValue());
}
columns.put(columnName, BigIntColumn.ofNull(columnName));
return this;
}
@Override
public Buildable floatValue(String columnName, float value) {
columns.put(columnName, FloatColumn.of(columnName, value));
return this;
}
@Override
public Buildable floatValue(String columnName, @Nullable Float value) {
if (value != null) {
return floatValue(columnName, value.floatValue());
}
columns.put(columnName, FloatColumn.ofNull(columnName));
return this;
}
@Override
public Buildable doubleValue(String columnName, double value) {
columns.put(columnName, DoubleColumn.of(columnName, value));
return this;
}
@Override
public Buildable doubleValue(String columnName, @Nullable Double value) {
if (value != null) {
return doubleValue(columnName, value.doubleValue());
}
columns.put(columnName, DoubleColumn.ofNull(columnName));
return this;
}
@Override
public Buildable textValue(String columnName, @Nullable String value) {
columns.put(columnName, TextColumn.of(columnName, value));
return this;
}
@Override
public Buildable blobValue(String columnName, @Nullable byte[] value) {
columns.put(columnName, BlobColumn.of(columnName, value));
return this;
}
@Override
public Buildable blobValue(String columnName, @Nullable ByteBuffer value) {
columns.put(columnName, BlobColumn.of(columnName, value));
return this;
}
@Override
public Buildable value(Column column) {
columns.put(column.getName(), column);
return this;
}
@Override
public Insert build() {
return new Insert(namespaceName, tableName, partitionKey, clusteringKey, columns);
}
}
public static class BuildableFromExisting extends Buildable
implements OperationBuilder.Namespace,
OperationBuilder.Table,
OperationBuilder.PartitionKey,
ClearClusteringKey,
ClearValues,
ClearNamespace {
BuildableFromExisting(Insert insert) {
super(
insert.forNamespace().orElse(null),
insert.forTable().orElse(null),
insert.getPartitionKey());
this.clusteringKey = insert.getClusteringKey().orElse(null);
this.columns.putAll(insert.getColumns());
}
@Override
public BuildableFromExisting namespace(String namespaceName) {
checkNotNull(namespaceName);
this.namespaceName = namespaceName;
return this;
}
@Override
public BuildableFromExisting table(String tableName) {
checkNotNull(tableName);
this.tableName = tableName;
return this;
}
@Override
public BuildableFromExisting partitionKey(Key partitionKey) {
checkNotNull(partitionKey);
this.partitionKey = partitionKey;
return this;
}
@Override
public BuildableFromExisting clusteringKey(Key clusteringKey) {
super.clusteringKey(clusteringKey);
return this;
}
@Override
public BuildableFromExisting booleanValue(String columnName, boolean value) {
super.booleanValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting booleanValue(String columnName, @Nullable Boolean value) {
super.booleanValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting intValue(String columnName, int value) {
super.intValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting intValue(String columnName, @Nullable Integer value) {
super.intValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting bigIntValue(String columnName, long value) {
super.bigIntValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting bigIntValue(String columnName, @Nullable Long value) {
super.bigIntValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting floatValue(String columnName, float value) {
super.floatValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting floatValue(String columnName, @Nullable Float value) {
super.floatValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting doubleValue(String columnName, double value) {
super.doubleValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting doubleValue(String columnName, @Nullable Double value) {
super.doubleValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting textValue(String columnName, @Nullable String value) {
super.textValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting blobValue(String columnName, @Nullable byte[] value) {
super.blobValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting blobValue(String columnName, @Nullable ByteBuffer value) {
super.blobValue(columnName, value);
return this;
}
@Override
public BuildableFromExisting value(Column column) {
super.value(column);
return this;
}
@Override
public BuildableFromExisting clearValues() {
columns.clear();
return this;
}
@Override
public BuildableFromExisting clearValue(String columnName) {
columns.remove(columnName);
return this;
}
@Override
public BuildableFromExisting clearClusteringKey() {
this.clusteringKey = null;
return this;
}
@Override
public BuildableFromExisting clearNamespace() {
this.namespaceName = null;
return this;
}
}
}
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