org.apache.metamodel.dynamodb

Class DynamoDbDataContext

java.lang.Object

org.apache.metamodel.AbstractDataContext

org.apache.metamodel.QueryPostprocessDataContext

org.apache.metamodel.dynamodb.DynamoDbDataContext

All Implemented Interfaces:

Closeable, AutoCloseable, HasReadTypeConverters, DataContext, UpdateableDataContext

public class DynamoDbDataContext
extends QueryPostprocessDataContext
implements UpdateableDataContext, Closeable

DataContext implementation for Amazon DynamoDB.

Field Summary

Fields

Modifier and Type	Field and Description
static String	SCHEMA_NAME The artificial schema name used by this DataContext.
static String	SYSTEM_PROPERTY_THROUGHPUT_READ_CAPACITY System property key used for getting the read throughput capacity when creating new tables.
static String	SYSTEM_PROPERTY_THROUGHPUT_WRITE_CAPACITY System property key used for getting the write throughput capacity when creating new tables.

Fields inherited from class org.apache.metamodel.QueryPostprocessDataContext

INFORMATION_SCHEMA_NAME, SYSTEM_PROPERTY_CREATE_DEFAULT_TABLE_ALIAS

Constructor Summary

Constructors

Constructor and Description
DynamoDbDataContext()
DynamoDbDataContext(com.amazonaws.services.dynamodbv2.AmazonDynamoDB client)
DynamoDbDataContext(com.amazonaws.services.dynamodbv2.AmazonDynamoDB client, SimpleTableDef[] tableDefs)
DynamoDbDataContext(SimpleTableDef[] tableDefs)

Method Summary

Modifier and Type	Method and Description
void	close()
protected Number	executeCountQuery(Table table, List<FilterItem> whereItems, boolean functionApproximationAllowed)
protected Row	executePrimaryKeyLookupQuery(Table table, List<SelectItem> selectItems, Column primaryKeyColumn, Object keyValue)
UpdateSummary	executeUpdate(UpdateScript update)
com.amazonaws.services.dynamodbv2.AmazonDynamoDB	getDynamoDb()
protected Schema	getMainSchema()
protected String	getMainSchemaName()
protected DataSet	materializeMainSchemaTable(Table table, List<Column> columns, int maxRows)

Methods inherited from class org.apache.metamodel.QueryPostprocessDataContext

addConverter, executeQuery, getDefaultSchemaName, getSchemaByNameInternal, getSchemaNamesInternal, isMainSchemaTable, isScalarFunctionMaterialized, materializeFromItem, materializeMainSchemaTable, materializeMainSchemaTable, materializeMainSchemaTableSelect, materializeTable

Methods inherited from class org.apache.metamodel.AbstractDataContext

compileQuery, executeQuery, executeQuery, getColumnByQualifiedLabel, getDefaultSchema, getSchemaByName, getSchemaNames, getSchemas, getTableByQualifiedLabel, isQualifiedPathDelim, onSchemaCacheRefreshed, parseQuery, query, refreshSchemas

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.metamodel.DataContext

compileQuery, executeQuery, executeQuery, executeQuery, getColumnByQualifiedLabel, getDefaultSchema, getSchemaByName, getSchemaNames, getSchemas, getTableByQualifiedLabel, parseQuery, query, refreshSchemas

Field Detail

SYSTEM_PROPERTY_THROUGHPUT_READ_CAPACITY

public static final String SYSTEM_PROPERTY_THROUGHPUT_READ_CAPACITY

System property key used for getting the read throughput capacity when creating new tables. Defaults to 5.

See Also:

Constant Field Values

SYSTEM_PROPERTY_THROUGHPUT_WRITE_CAPACITY

public static final String SYSTEM_PROPERTY_THROUGHPUT_WRITE_CAPACITY

System property key used for getting the write throughput capacity when creating new tables. Defaults to 5.

See Also:

Constant Field Values

SCHEMA_NAME

public static final String SCHEMA_NAME

The artificial schema name used by this DataContext.

See Also:

Constant Field Values

Constructor Detail

DynamoDbDataContext

public DynamoDbDataContext()

DynamoDbDataContext

public DynamoDbDataContext(SimpleTableDef[] tableDefs)

DynamoDbDataContext

public DynamoDbDataContext(com.amazonaws.services.dynamodbv2.AmazonDynamoDB client)

DynamoDbDataContext

public DynamoDbDataContext(com.amazonaws.services.dynamodbv2.AmazonDynamoDB client,
                           SimpleTableDef[] tableDefs)

Method Detail

getDynamoDb

public com.amazonaws.services.dynamodbv2.AmazonDynamoDB getDynamoDb()

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

getMainSchema

protected Schema getMainSchema()
                        throws MetaModelException

Specified by:

getMainSchema in class QueryPostprocessDataContext

Throws:

MetaModelException

getMainSchemaName

protected String getMainSchemaName()
                            throws MetaModelException

Specified by:

getMainSchemaName in class QueryPostprocessDataContext

Throws:

MetaModelException

executeCountQuery

protected Number executeCountQuery(Table table,
                                   List<FilterItem> whereItems,
                                   boolean functionApproximationAllowed)

Overrides:

executeCountQuery in class QueryPostprocessDataContext

materializeMainSchemaTable

protected DataSet materializeMainSchemaTable(Table table,
                                             List<Column> columns,
                                             int maxRows)

Specified by:

materializeMainSchemaTable in class QueryPostprocessDataContext

executePrimaryKeyLookupQuery

protected Row executePrimaryKeyLookupQuery(Table table,
                                           List<SelectItem> selectItems,
                                           Column primaryKeyColumn,
                                           Object keyValue)

Overrides:

executePrimaryKeyLookupQuery in class QueryPostprocessDataContext

executeUpdate

public UpdateSummary executeUpdate(UpdateScript update)

Specified by:

executeUpdate in interface UpdateableDataContext