org.springframework.boot.jdbc.metadata

Class AbstractDataSourcePoolMetadata<T extends DataSource>

java.lang.Object

org.springframework.boot.jdbc.metadata.AbstractDataSourcePoolMetadata<T>

Type Parameters:

T - the data source type

All Implemented Interfaces:

DataSourcePoolMetadata

Direct Known Subclasses:

CommonsDbcp2DataSourcePoolMetadata, HikariDataSourcePoolMetadata, TomcatDataSourcePoolMetadata

public abstract class AbstractDataSourcePoolMetadata<T extends DataSource>
extends Object
implements DataSourcePoolMetadata

A base DataSourcePoolMetadata implementation.

Since:

2.0.0

Author:

Stephane Nicoll

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractDataSourcePoolMetadata(T dataSource) Create an instance with the data source to use.

Method Summary

Modifier and Type	Method and Description
protected T	getDataSource()
Float	getUsage() Return the usage of the pool as value between 0 and 1 (or -1 if the pool is not limited).

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.boot.jdbc.metadata.DataSourcePoolMetadata

getActive, getDefaultAutoCommit, getMax, getMin, getValidationQuery

Constructor Detail

AbstractDataSourcePoolMetadata

protected AbstractDataSourcePoolMetadata(T dataSource)

Create an instance with the data source to use.

Parameters:

dataSource - the data source

Method Detail

getUsage

public Float getUsage()

Description copied from interface: DataSourcePoolMetadata

Return the usage of the pool as value between 0 and 1 (or -1 if the pool is not limited).

• 1 means that the maximum number of connections have been allocated
• 0 means that no connection is currently active
• -1 means there is not limit to the number of connections that can be allocated

This may also return null if the data source does not provide the necessary information to compute the poll usage.

Specified by:

getUsage in interface DataSourcePoolMetadata

Returns:

the usage value or null

getDataSource

protected final T getDataSource()