Example usage for org.apache.ibatis.session Configuration newExecutor

Introduction

In this page you can find the example usage for org.apache.ibatis.session Configuration newExecutor.

Prototype

public Executor newExecutor(Transaction transaction, ExecutorType executorType) 

Source Link

Usage

From source file:com.sinotopia.mybatis.mapper.mapperhelper.SelectKeyGenerator.java

License:Apache License

private void processGeneratedKeys(Executor executor, MappedStatement ms, Object parameter) {
    try {/*w w  w.java2 s  . c  o m*/
        if (parameter != null && keyStatement != null && keyStatement.getKeyProperties() != null) {
            String[] keyProperties = keyStatement.getKeyProperties();
            final Configuration configuration = ms.getConfiguration();
            final MetaObject metaParam = configuration.newMetaObject(parameter);
            if (keyProperties != null) {
                // Do not close keyExecutor.
                // The transaction will be closed by parent executor.
                Executor keyExecutor = configuration.newExecutor(executor.getTransaction(),
                        ExecutorType.SIMPLE);
                List<Object> values = keyExecutor.query(keyStatement, parameter, RowBounds.DEFAULT,
                        Executor.NO_RESULT_HANDLER);
                if (values.size() == 0) {
                    throw new ExecutorException("SelectKey returned no data.");
                } else if (values.size() > 1) {
                    throw new ExecutorException("SelectKey returned more than one value.");
                } else {
                    MetaObject metaResult = configuration.newMetaObject(values.get(0));
                    if (keyProperties.length == 1) {
                        if (metaResult.hasGetter(keyProperties[0])) {
                            setValue(metaParam, keyProperties[0], metaResult.getValue(keyProperties[0]));
                        } else {
                            // no getter for the property - maybe just a single value object
                            // so try that
                            setValue(metaParam, keyProperties[0], values.get(0));
                        }
                    } else {
                        handleMultipleProperties(keyProperties, metaParam, metaResult);
                    }
                }
            }
        }
    } catch (ExecutorException e) {
        throw e;
    } catch (Exception e) {
        throw new ExecutorException("Error selecting key or setting result to parameter object. Cause: " + e,
                e);
    }
}

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