Examples with TypeHandler org.apache.ibatis.type.TypeHandler used on opensource projects

Example 1 with TypeHandler

use of org.apache.ibatis.type.TypeHandler in project mybatis-3 by mybatis.

the class MapperAnnotationBuilder method applyResults.

private void applyResults(Result[] results, Class<?> resultType, List<ResultMapping> resultMappings) {
    for (Result result : results) {
        List<ResultFlag> flags = new ArrayList<ResultFlag>();
        if (result.id()) {
            flags.add(ResultFlag.ID);
        }
        @SuppressWarnings("unchecked") Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>) ((result.typeHandler() == UnknownTypeHandler.class) ? null : result.typeHandler());
        ResultMapping resultMapping = assistant.buildResultMapping(resultType, nullOrEmpty(result.property()), nullOrEmpty(result.column()), result.javaType() == void.class ? null : result.javaType(), result.jdbcType() == JdbcType.UNDEFINED ? null : result.jdbcType(), hasNestedSelect(result) ? nestedSelectId(result) : null, null, null, null, typeHandler, flags, null, null, isLazy(result));
        resultMappings.add(resultMapping);
    }
}

Example 2 with TypeHandler

use of org.apache.ibatis.type.TypeHandler in project mybatis-3 by mybatis.

the class MapperAnnotationBuilder method applyDiscriminator.

private Discriminator applyDiscriminator(String resultMapId, Class<?> resultType, TypeDiscriminator discriminator) {
    if (discriminator != null) {
        String column = discriminator.column();
        Class<?> javaType = discriminator.javaType() == void.class ? String.class : discriminator.javaType();
        JdbcType jdbcType = discriminator.jdbcType() == JdbcType.UNDEFINED ? null : discriminator.jdbcType();
        @SuppressWarnings("unchecked") Class<? extends TypeHandler<?>> typeHandler = (Class<? extends TypeHandler<?>>) (discriminator.typeHandler() == UnknownTypeHandler.class ? null : discriminator.typeHandler());
        Case[] cases = discriminator.cases();
        Map<String, String> discriminatorMap = new HashMap<String, String>();
        for (Case c : cases) {
            String value = c.value();
            String caseResultMapId = resultMapId + "-" + value;
            discriminatorMap.put(value, caseResultMapId);
        }
        return assistant.buildDiscriminator(resultType, column, javaType, jdbcType, typeHandler, discriminatorMap);
    }
    return null;
}

Example 3 with TypeHandler

use of org.apache.ibatis.type.TypeHandler in project mybatis-3 by mybatis.

the class DefaultParameterHandler method setParameters.

@Override
public void setParameters(PreparedStatement ps) {
    ErrorContext.instance().activity("setting parameters").object(mappedStatement.getParameterMap().getId());
    List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
    if (parameterMappings != null) {
        for (int i = 0; i < parameterMappings.size(); i++) {
            ParameterMapping parameterMapping = parameterMappings.get(i);
            if (parameterMapping.getMode() != ParameterMode.OUT) {
                Object value;
                String propertyName = parameterMapping.getProperty();
                if (boundSql.hasAdditionalParameter(propertyName)) {
                    // issue #448 ask first for additional params
                    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);
                }
                TypeHandler typeHandler = parameterMapping.getTypeHandler();
                JdbcType jdbcType = parameterMapping.getJdbcType();
                if (value == null && jdbcType == null) {
                    jdbcType = configuration.getJdbcTypeForNull();
                }
                try {
                    typeHandler.setParameter(ps, i + 1, value, jdbcType);
                } catch (TypeException e) {
                    throw new TypeException("Could not set parameters for mapping: " + parameterMapping + ". Cause: " + e, e);
                } catch (SQLException e) {
                    throw new TypeException("Could not set parameters for mapping: " + parameterMapping + ". Cause: " + e, e);
                }
            }
        }
    }
}

Example 4 with TypeHandler

use of org.apache.ibatis.type.TypeHandler in project mybatis-3 by mybatis.

the class ResultSetWrapper method getTypeHandler.

/**
   * Gets the type handler to use when reading the result set.
   * Tries to get from the TypeHandlerRegistry by searching for the property type.
   * If not found it gets the column JDBC type and tries to get a handler for it.
   * 
   * @param propertyType
   * @param columnName
   * @return
   */
public TypeHandler<?> getTypeHandler(Class<?> propertyType, String columnName) {
    TypeHandler<?> handler = null;
    Map<Class<?>, TypeHandler<?>> columnHandlers = typeHandlerMap.get(columnName);
    if (columnHandlers == null) {
        columnHandlers = new HashMap<Class<?>, TypeHandler<?>>();
        typeHandlerMap.put(columnName, columnHandlers);
    } else {
        handler = columnHandlers.get(propertyType);
    }
    if (handler == null) {
        JdbcType jdbcType = getJdbcType(columnName);
        handler = typeHandlerRegistry.getTypeHandler(propertyType, jdbcType);
        // See issue #59 comment 10
        if (handler == null || handler instanceof UnknownTypeHandler) {
            final int index = columnNames.indexOf(columnName);
            final Class<?> javaType = resolveClass(classNames.get(index));
            if (javaType != null && jdbcType != null) {
                handler = typeHandlerRegistry.getTypeHandler(javaType, jdbcType);
            } else if (javaType != null) {
                handler = typeHandlerRegistry.getTypeHandler(javaType);
            } else if (jdbcType != null) {
                handler = typeHandlerRegistry.getTypeHandler(jdbcType);
            }
        }
        if (handler == null || handler instanceof UnknownTypeHandler) {
            handler = new ObjectTypeHandler();
        }
        columnHandlers.put(propertyType, handler);
    }
    return handler;
}

Example 5 with TypeHandler

use of org.apache.ibatis.type.TypeHandler 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
            }
        }
    }
}