com.netflix.conductor.dao.mysql

Class MySQLBaseDAO

java.lang.Object

com.netflix.conductor.dao.mysql.MySQLBaseDAO

Direct Known Subclasses:

MySQLExecutionDAO, MySQLMetadataDAO, MySQLQueueDAO

public abstract class MySQLBaseDAO
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
protected javax.sql.DataSource	dataSource
protected org.slf4j.Logger	logger
protected com.fasterxml.jackson.databind.ObjectMapper	objectMapper

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MySQLBaseDAO(com.fasterxml.jackson.databind.ObjectMapper om, javax.sql.DataSource dataSource)

Method Summary

Modifier and Type	Method and Description
protected void	execute(java.sql.Connection tx, java.lang.String query, ExecuteFunction function) Execute a statement with no expected return value within a given transaction.
protected void	executeWithTransaction(java.lang.String query, ExecuteFunction function) Instantiates a new transactional connection and invokes execute(Connection, String, ExecuteFunction)
protected com.netflix.conductor.dao.mysql.LazyToString	getCallingMethod()
protected <R> R	getWithTransaction(TransactionalFunction<R> function) Initialize a new transactional Connection from dataSource and pass it to function.
protected <R> R	query(java.sql.Connection tx, java.lang.String query, QueryFunction<R> function) Execute a Query within the context of a given transaction and return the results of function.
protected <R> R	queryWithTransaction(java.lang.String query, QueryFunction<R> function) Initiate a new transaction and execute a Query within that context, then return the results of function.
protected <T> T	readValue(java.lang.String json, java.lang.Class<T> tClass)
protected <T> T	readValue(java.lang.String json, com.fasterxml.jackson.core.type.TypeReference<T> typeReference)
protected java.lang.String	toJson(java.lang.Object value)
protected void	withTransaction(java.util.function.Consumer<java.sql.Connection> consumer) Wraps getWithTransaction(TransactionalFunction) with no return value.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final org.slf4j.Logger logger

objectMapper

protected final com.fasterxml.jackson.databind.ObjectMapper objectMapper

dataSource

protected final javax.sql.DataSource dataSource

Constructor Detail

MySQLBaseDAO

protected MySQLBaseDAO(com.fasterxml.jackson.databind.ObjectMapper om,
                       javax.sql.DataSource dataSource)

Method Detail

getCallingMethod

protected final com.netflix.conductor.dao.mysql.LazyToString getCallingMethod()

toJson

protected java.lang.String toJson(java.lang.Object value)

readValue

protected <T> T readValue(java.lang.String json,
                          java.lang.Class<T> tClass)

readValue

protected <T> T readValue(java.lang.String json,
                          com.fasterxml.jackson.core.type.TypeReference<T> typeReference)

getWithTransaction

protected <R> R getWithTransaction(TransactionalFunction<R> function)

Initialize a new transactional Connection from dataSource and pass it to function.

Successful executions of function will result in a commit and return of TransactionalFunction.apply(Connection).

If any Throwable thrown from TransactionalFunction#apply(Connection) will result in a rollback of the transaction and will be wrapped in an ApplicationException if it is not already one.

Generally this is used to wrap multiple execute(Connection, String, ExecuteFunction) or query(Connection, String, QueryFunction) invocations that produce some expected return value.

Type Parameters:

R - The return type.

Parameters:

function - The function to apply with a new transactional Connection

Returns:

The result of TransactionalFunction#apply(Connection)

Throws:

com.netflix.conductor.core.execution.ApplicationException - If any errors occur.

withTransaction

protected void withTransaction(java.util.function.Consumer<java.sql.Connection> consumer)

Wraps getWithTransaction(TransactionalFunction) with no return value.

Generally this is used to wrap multiple execute(Connection, String, ExecuteFunction) or query(Connection, String, QueryFunction) invocations that produce no expected return value.

Parameters:

consumer - The Consumer callback to pass a transactional Connection to.

Throws:

com.netflix.conductor.core.execution.ApplicationException - If any errors occur.

See Also:

getWithTransaction(TransactionalFunction)

queryWithTransaction

protected <R> R queryWithTransaction(java.lang.String query,
                                     QueryFunction<R> function)

Initiate a new transaction and execute a Query within that context, then return the results of function.

Type Parameters:

R - The expected return type of function.

Parameters:

query - The query string to prepare.

function - The functional callback to pass a Query to.

Returns:

The results of applying function.

query

protected <R> R query(java.sql.Connection tx,
                      java.lang.String query,
                      QueryFunction<R> function)

Execute a Query within the context of a given transaction and return the results of function.

Type Parameters:

R - The expected return type of function.

Parameters:

tx - The transactional Connection to use.

query - The query string to prepare.

function - The functional callback to pass a Query to.

Returns:

The results of applying function.

execute

protected void execute(java.sql.Connection tx,
                       java.lang.String query,
                       ExecuteFunction function)

Execute a statement with no expected return value within a given transaction.

Parameters:

tx - The transactional Connection to use.

query - The query string to prepare.

function - The functional callback to pass a Query to.

executeWithTransaction

protected void executeWithTransaction(java.lang.String query,
                                      ExecuteFunction function)

Instantiates a new transactional connection and invokes execute(Connection, String, ExecuteFunction)

Parameters:

query - The query string to prepare.

function - The functional callback to pass a Query to.