JDBC Driver for HarperDB

Build 23.0.8839


This section provides a complete list of the Miscellaneous properties you can configure in the connection string for this provider.

BatchSizeThe maximum size of each batch operation to submit.
ConnectionLifeTimeThe maximum lifetime of a connection in seconds. Once the time has elapsed, the connection object is disposed.
ConnectOnOpenThis property specifies whether to connect to the HarperDB when the connection is opened.
FlattenArraysSet FlattenArrays to the number of array elements you want to return as table columns. Otherwise, arrays are returned as strings of JSON.
FlattenObjectsSet FlattenObjects to true to flatten object properties into columns of their own. Otherwise, nested objects are returned as strings of JSON.
MaxRowsLimits the number of rows returned when no aggregation or GROUP BY is used in the query. This takes precedence over LIMIT clauses.
OtherThese hidden properties are used only in specific use cases.
PoolIdleTimeoutThe allowed idle time for a connection before it is closed.
PoolMaxSizeThe maximum connections in the pool.
PoolMinSizeThe minimum number of connections in the pool.
PoolWaitTimeThe max seconds to wait for an available connection.
PseudoColumnsThis property indicates whether or not to include pseudo columns as columns to the table.
ReadonlyYou can use this property to enforce read-only access to HarperDB from the provider.
RefreshCachedSchemaAfterDDLWhether or not the driver should refresh cached metadata, whether cached in memory or cached otherwise as configured by the driver's caching settings, after the successful execution of the driver's stored procedures, which all affect the schema in HarperDB itself.
RowScanDepthThe maximum number of rows to scan when generating table metadata. Set this property to gain more control over how the provider detects data types.
TimeoutThe value in seconds until the timeout error is thrown, canceling the operation.
TypeDetectionSchemeComma-separated options for how the provider will scan the data to determine the fields and datatypes in each document collection.
UseConnectionPoolingThis property enables connection pooling.
UserDefinedViewsA filepath pointing to the JSON configuration file containing your custom views.

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Build 23.0.8839