cn.featherfly.component.sorm.mapping.ClassMapping Maven / Gradle / Ivy
package cn.featherfly.component.sorm.mapping;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.Id;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import cn.featherfly.common.bean.BeanDescriptor;
import cn.featherfly.common.bean.BeanProperty;
import cn.featherfly.common.bean.matcher.BeanPropertyAnnotationMatcher;
import cn.featherfly.common.bean.matcher.BeanPropertyNameRegexMatcher;
import cn.featherfly.common.constant.Chars;
import cn.featherfly.common.db.metadata.ColumnMetadata;
import cn.featherfly.common.db.metadata.DatabaseMetadata;
import cn.featherfly.common.db.metadata.TableMetadata;
import cn.featherfly.common.enums.Logic;
import cn.featherfly.common.lang.LangUtils;
import cn.featherfly.common.lang.ServiceLoaderUtils;
import cn.featherfly.common.lang.StringUtils;
import cn.featherfly.common.lang.SystemPropertyUtils;
import cn.featherfly.common.lang.WordUtils;
import cn.featherfly.component.sorm.SimpleORMException;
import cn.featherfly.component.sorm.annotation.Column;
import cn.featherfly.component.sorm.annotation.Identity;
/**
*
* 类映射
*
* @param 类型
* @author 钟冀
* @since 1.0
* @version 1.0
*/
public class ClassMapping {
private static final Logger LOGGER = LoggerFactory.getLogger(ClassMapping.class);
private static final char UNDER_LINE = '_';
private static final Map, ClassMapping> MAPPED_CLASS = new HashMap, ClassMapping>();
private static final List TABLE_NAME_FACTORIES;
// private static final List COLUMN_NAME_FACTORIES;
static {
TABLE_NAME_FACTORIES = ServiceLoaderUtils.loadAll(ClassTableNameFactory.class);
TABLE_NAME_FACTORIES.add(new ClassTableNameJpaFactory());
TABLE_NAME_FACTORIES.add(new ClassTableNameSormAnnotationFactory());
TABLE_NAME_FACTORIES.add(new ClassTableNameSormNameMapFactory());
// COLUMN_NAME_FACTORIES = ServiceLoaderUtils.loadAll(PropertyColumnNameFactory.class);
}
/**
*
* @param type 类型
* @param tableName 表名
*/
public ClassMapping(Class type, String tableName) {
this.type = type;
this.tableName = tableName;
}
/**
*
* 返回指定属性名称的属性映射.
* 没有找到返回null.
*
* @param propertyName 属性名称
* @return 属性映射对象
*/
public PropertyMapping getPropertyMapping(String propertyName) {
return propertyMappings.get(propertyName);
}
/**
*
* 返回所有属性映射
*
* @return 所有属性映射
*/
public Collection getPropertyMappings() {
return propertyMappings.values();
}
// ********************************************************************
//
// ********************************************************************
/**
* 返回指定类型的描述
* @param 类型
* @param type 类型
* @param meta 数据库元数据
* @return 指定类型的描述
*/
public static ClassMapping getMappedClass(Class type, DatabaseMetadata meta) {
@SuppressWarnings("unchecked")
ClassMapping cm = (ClassMapping) MAPPED_CLASS.get(type);
if (cm == null) {
Map tableMapping = new HashMap();
StringBuilder logInfo = new StringBuilder();
// // 从对象中读取有Column的列，找到显示映射，使用scan扫描
BeanDescriptor bd = BeanDescriptor.getBeanDescriptor(type);
String tableName = getTableName(type);
tableName = tableName.toUpperCase();
logInfo.append(String.format("###%s类%s映射到表%s",
SystemPropertyUtils.getLineSeparator(), type.getName(), tableName));
Collection> bps = bd.findBeanPropertys(
new BeanPropertyAnnotationMatcher(Logic.OR, Column.class, Identity.class, Id.class));
boolean findPk = false;
for (BeanProperty beanProperty : bps) {
if (mapping(beanProperty, tableMapping, logInfo)) {
findPk = true;
}
}
if (!findPk) {
throw new SimpleORMException("#id.map.not.exists", new Object[] {type.getName()});
}
// 从对象对应的table读取列，找到隐式映射（下划线分割后的自动大写）
TableMetadata tm = meta.getTable(tableName);
if (tm == null) {
throw new SimpleORMException("#talbe.not.exists", new Object[] {tableName});
}
for (ColumnMetadata cmd : tm.getColumns()) {
mappingHidden(bd, tableMapping, cmd, logInfo);
}
if (LOGGER.isDebugEnabled()) {
LOGGER.debug(logInfo.toString());
}
// 形成映射对象
cm = new ClassMapping(type, tableName);
cm.addPropertyMappings(tableMapping.values());
MAPPED_CLASS.put(type, cm);
}
return cm;
}
// ********************************************************************
// private method
// ********************************************************************
private static String getTableName(Class type) {
String tableName = null;
for (ClassTableNameFactory classTableNameFactory : TABLE_NAME_FACTORIES) {
tableName = classTableNameFactory.getMappingTableName(type);
if (LangUtils.isNotEmpty(tableName)) return tableName;
}
if (LangUtils.isEmpty(tableName)) {
throw new SimpleORMException("#notalbe.map.type", new Object[] {type.getName()});
}
return tableName;
}
// private static String getColumnName(BeanProperty bp) {
// String columnName = null;
// for (PropertyColumnNameFactory columnNameFactory : COLUMN_NAME_FACTORIES) {
// columnName = columnNameFactory.getMappingColumnName(bp);
// if (columnName != null) return columnName;
// }
// if (LangUtils.isEmpty(columnName)) {
// throw new SimpleORMException(String.format("没有找到类型%s的属性%s对应的列名"
// , bp.getOwnerType().getName(), bp.getName()));
// }
// return columnName;
// }
private static boolean mapping(BeanProperty beanProperty, Map tableMapping
, StringBuilder logInfo) {
PropertyMapping mapping = new PropertyMapping();
Column columnAnnotation = beanProperty.getAnnotation(Column.class);
String columnName = null;
String innerProperty = null;
if (columnAnnotation == null) {
columnName = WordUtils.addSignBeforeUpper(
beanProperty.getName(), UNDER_LINE , true);
} else {
columnName = columnAnnotation.value();
innerProperty = columnAnnotation.innerProperty();
}
mapping.setColumnName(columnName.toUpperCase());
mapping.setPropertyName(beanProperty.getName());
mapping.setPropertyType(beanProperty.getType());
if (StringUtils.isNotEmpty(innerProperty)) {
BeanDescriptor innerBd = BeanDescriptor
.getBeanDescriptor(beanProperty.getType());
BeanProperty innerBeanProperty = innerBd.getBeanProperty(
innerProperty);
mapping.setInnerPropertyName(innerBeanProperty.getName());
mapping.setInnerPropertyType(innerBeanProperty.getType());
}
boolean hasPk = beanProperty.hasAnnotation(Identity.class);;
if (!hasPk) {
hasPk = beanProperty.hasAnnotation(Id.class);
}
mapping.setPrimaryKey(hasPk);
tableMapping.put(mapping.getColumnName(), mapping);
if (LOGGER.isDebugEnabled()) {
logInfo.append(String.format("%s###\t%s -> %s",
SystemPropertyUtils.getLineSeparator(),
mapping.getFinalPropertyName(), mapping.getColumnName()));
}
return hasPk;
}
private static void mappingHidden(BeanDescriptor bd, Map tableMapping
, ColumnMetadata cmd, StringBuilder logInfo) {
if (!tableMapping.containsKey(cmd.getName())) {
// 转换下划线，并使用驼峰
String columnName = cmd.getName().toLowerCase();
String propertyName = WordUtils.parseToUpperFirst(
columnName, Chars.UNDER_LINE.charAt(0));
BeanProperty beanProperty = bd.findBeanProperty(
new BeanPropertyNameRegexMatcher(propertyName));
if (beanProperty != null) {
PropertyMapping mapping = new PropertyMapping();
mapping.setPropertyType(beanProperty.getType());
mapping.setPropertyName(propertyName);
mapping.setColumnName(columnName.toUpperCase());
mapping.setPrimaryKey(cmd.isPrimaryKey());
tableMapping.put(mapping.getColumnName(), mapping);
if (LOGGER.isDebugEnabled()) {
logInfo.append(String.format("%s###\t%s -> %s",
SystemPropertyUtils.getLineSeparator(),
mapping.getPropertyName(), mapping.getColumnName()));
}
} else {
if (LOGGER.isDebugEnabled()) {
logInfo.append(String.format("%s\t没有属性 -> %s [列%s的隐式映射]",
SystemPropertyUtils.getLineSeparator(), propertyName, cmd.getName()));
}
}
}
}
private void addPropertyMapping(PropertyMapping propertyMapping) {
propertyMappings.put(propertyMapping.getPropertyName(), propertyMapping);
}
// private void addPropertyMappings(PropertyMapping...propertyMappings) {
// for (PropertyMapping propertyMapping : propertyMappings) {
// addPropertyMapping(propertyMapping);
// }
// }
private void addPropertyMappings(Collection propertyMappings) {
for (PropertyMapping propertyMapping : propertyMappings) {
addPropertyMapping(propertyMapping);
}
}
// ********************************************************************
//
// ********************************************************************
private Map propertyMappings = new HashMap(0);
private String tableName;
private Class type;
/**
* @return 返回tableName
*/
public String getTableName() {
return tableName;
}
/**
* @return 返回type
*/
public Class getType() {
return type;
}
}