Examples with MetaObject org.apache.ibatis.reflection.MetaObject used on opensource projects

Example 6 with MetaObject

use of org.apache.ibatis.reflection.MetaObject in project mybatis-3 by mybatis.

the class UnpooledDataSourceFactory method setProperties.

@Override
public void setProperties(Properties properties) {
    Properties driverProperties = new Properties();
    MetaObject metaDataSource = SystemMetaObject.forObject(dataSource);
    for (Object key : properties.keySet()) {
        String propertyName = (String) key;
        if (propertyName.startsWith(DRIVER_PROPERTY_PREFIX)) {
            String value = properties.getProperty(propertyName);
            driverProperties.setProperty(propertyName.substring(DRIVER_PROPERTY_PREFIX_LENGTH), value);
        } else if (metaDataSource.hasSetter(propertyName)) {
            String value = (String) properties.get(propertyName);
            Object convertedValue = convertValue(metaDataSource, propertyName, value);
            metaDataSource.setValue(propertyName, convertedValue);
        } else {
            throw new DataSourceException("Unknown DataSource property: " + propertyName);
        }
    }
    if (driverProperties.size() > 0) {
        metaDataSource.setValue("driverProperties", driverProperties);
    }
}

Example 7 with MetaObject

use of org.apache.ibatis.reflection.MetaObject in project mybatis-3 by mybatis.

the class BaseExecutor method createCacheKey.

@Override
public CacheKey createCacheKey(MappedStatement ms, Object parameterObject, RowBounds rowBounds, BoundSql boundSql) {
    if (closed) {
        throw new ExecutorException("Executor was closed.");
    }
    CacheKey cacheKey = new CacheKey();
    cacheKey.update(ms.getId());
    cacheKey.update(rowBounds.getOffset());
    cacheKey.update(rowBounds.getLimit());
    cacheKey.update(boundSql.getSql());
    List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
    TypeHandlerRegistry typeHandlerRegistry = ms.getConfiguration().getTypeHandlerRegistry();
    // mimic DefaultParameterHandler logic
    for (ParameterMapping parameterMapping : parameterMappings) {
        if (parameterMapping.getMode() != ParameterMode.OUT) {
            Object value;
            String propertyName = parameterMapping.getProperty();
            if (boundSql.hasAdditionalParameter(propertyName)) {
                value = boundSql.getAdditionalParameter(propertyName);
            } else if (parameterObject == null) {
                value = null;
            } else if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                value = parameterObject;
            } else {
                MetaObject metaObject = configuration.newMetaObject(parameterObject);
                value = metaObject.getValue(propertyName);
            }
            cacheKey.update(value);
        }
    }
    if (configuration.getEnvironment() != null) {
        // issue #176
        cacheKey.update(configuration.getEnvironment().getId());
    }
    return cacheKey;
}

Example 8 with MetaObject

use of org.apache.ibatis.reflection.MetaObject in project mybatis-3 by mybatis.

the class ResultExtractor method extractObjectFromList.

public Object extractObjectFromList(List<Object> list, Class<?> targetType) {
    Object value = null;
    if (targetType != null && targetType.isAssignableFrom(list.getClass())) {
        value = list;
    } else if (targetType != null && objectFactory.isCollection(targetType)) {
        value = objectFactory.create(targetType);
        MetaObject metaObject = configuration.newMetaObject(value);
        metaObject.addAll(list);
    } else if (targetType != null && targetType.isArray()) {
        Class<?> arrayComponentType = targetType.getComponentType();
        Object array = Array.newInstance(arrayComponentType, list.size());
        if (arrayComponentType.isPrimitive()) {
            for (int i = 0; i < list.size(); i++) {
                Array.set(array, i, list.get(i));
            }
            value = array;
        } else {
            value = list.toArray((Object[]) array);
        }
    } else {
        if (list != null && list.size() > 1) {
            throw new ExecutorException("Statement returned more than one row, where no more than one was expected.");
        } else if (list != null && list.size() == 1) {
            value = list.get(0);
        }
    }
    return value;
}

Example 9 with MetaObject

use of org.apache.ibatis.reflection.MetaObject in project mybatis-3 by mybatis.

the class Jdbc3KeyGenerator method processBatch.

public void processBatch(MappedStatement ms, Statement stmt, Collection<Object> parameters) {
    ResultSet rs = null;
    try {
        rs = stmt.getGeneratedKeys();
        final Configuration configuration = ms.getConfiguration();
        final TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
        final String[] keyProperties = ms.getKeyProperties();
        final ResultSetMetaData rsmd = rs.getMetaData();
        TypeHandler<?>[] typeHandlers = null;
        if (keyProperties != null && rsmd.getColumnCount() >= keyProperties.length) {
            for (Object parameter : parameters) {
                // there should be one row for each statement (also one for each parameter)
                if (!rs.next()) {
                    break;
                }
                final MetaObject metaParam = configuration.newMetaObject(parameter);
                if (typeHandlers == null) {
                    typeHandlers = getTypeHandlers(typeHandlerRegistry, metaParam, keyProperties, rsmd);
                }
                populateKeys(rs, metaParam, keyProperties, typeHandlers);
            }
        }
    } catch (Exception e) {
        throw new ExecutorException("Error getting generated key or setting result to parameter object. Cause: " + e, e);
    } finally {
        if (rs != null) {
            try {
                rs.close();
            } catch (Exception e) {
            // ignore
            }
        }
    }
}

Example 10 with MetaObject

use of org.apache.ibatis.reflection.MetaObject in project mybatis-3 by mybatis.

the class DefaultResultSetHandler method applyNestedResultMappings.

//
// NESTED RESULT MAP (JOIN MAPPING)
//
private boolean applyNestedResultMappings(ResultSetWrapper rsw, ResultMap resultMap, MetaObject metaObject, String parentPrefix, CacheKey parentRowKey, boolean newObject) {
    boolean foundValues = false;
    for (ResultMapping resultMapping : resultMap.getPropertyResultMappings()) {
        final String nestedResultMapId = resultMapping.getNestedResultMapId();
        if (nestedResultMapId != null && resultMapping.getResultSet() == null) {
            try {
                final String columnPrefix = getColumnPrefix(parentPrefix, resultMapping);
                final ResultMap nestedResultMap = getNestedResultMap(rsw.getResultSet(), nestedResultMapId, columnPrefix);
                if (resultMapping.getColumnPrefix() == null) {
                    // try to fill circular reference only when columnPrefix
                    // is not specified for the nested result map (issue #215)
                    Object ancestorObject = ancestorObjects.get(nestedResultMapId);
                    if (ancestorObject != null) {
                        if (newObject) {
                            // issue #385
                            linkObjects(metaObject, resultMapping, ancestorObject);
                        }
                        continue;
                    }
                }
                final CacheKey rowKey = createRowKey(nestedResultMap, rsw, columnPrefix);
                final CacheKey combinedKey = combineKeys(rowKey, parentRowKey);
                Object rowValue = nestedResultObjects.get(combinedKey);
                boolean knownValue = (rowValue != null);
                // mandatory
                instantiateCollectionPropertyIfAppropriate(resultMapping, metaObject);
                if (anyNotNullColumnHasValue(resultMapping, columnPrefix, rsw)) {
                    rowValue = getRowValue(rsw, nestedResultMap, combinedKey, columnPrefix, rowValue);
                    if (rowValue != null && !knownValue) {
                        linkObjects(metaObject, resultMapping, rowValue);
                        foundValues = true;
                    }
                }
            } catch (SQLException e) {
                throw new ExecutorException("Error getting nested result map values for '" + resultMapping.getProperty() + "'.  Cause: " + e, e);
            }
        }
    }
    return foundValues;
}