Examples with ReflectUtil org.eweb4j.util.ReflectUtil used on opensource projects

Example 1 with ReflectUtil

use of org.eweb4j.util.ReflectUtil in project eweb4j-framework by laiweiwei.

the class OneToManyDAO method delete.

/**
	 * 
	 * 一对多（主从）级联删除 
	 * 1.前提条件必须主对象要存在于数据库中
	 * 2.检查当前主对象中的关联对象，如果关联对象为空，则删除所有与主对象有关的关联关系。
	 * 3.如果当前主对象中含有关联对象，则删除这些关联对象与主对象的关系
	 * 4.不会删除主对象
	 */
public void delete() throws DAOException {
    if (this.fields == null || this.fields.size() == 0)
        return;
    final Class<?> ownClass = ru.getObject().getClass();
    Transaction.execute(new Trans() {

        @Override
        public void run(Object... args) throws Exception {
            for (Field f : fields) {
                Method tarGetter = ru.getGetter(f.getName());
                if (tarGetter == null)
                    continue;
                OneToMany ann = tarGetter.getAnnotation(OneToMany.class);
                if (ann == null) {
                    ann = f.getAnnotation(OneToMany.class);
                    if (ann == null)
                        continue;
                }
                String mappedBy = ann.mappedBy();
                Class<?> tarClass = ann.targetEntity();
                if (void.class.isAssignableFrom(tarClass))
                    tarClass = ClassUtil.getGenericType(f);
                List<?> tarList = null;
                try {
                    tarList = (List<?>) tarGetter.invoke(t);
                } catch (Exception e) {
                    throw new DAOException(tarGetter + " invoke exception ", e);
                }
                if (tarList == null || tarList.size() == 0) {
                    // 当关联对象为空的时候，删除所有关联对象
                    ReflectUtil tarRu = new ReflectUtil(tarClass);
                    if (mappedBy == null || mappedBy.trim().length() == 0) {
                        for (Field tarObjField : tarRu.getFields()) {
                            if (!tarObjField.getType().getName().equals(ownClass.getName()))
                                continue;
                            Method tarObjFieldGetter = tarRu.getGetter(tarObjField.getName());
                            if (tarObjFieldGetter == null)
                                continue;
                            ManyToOne manyToOne = tarObjField.getAnnotation(ManyToOne.class);
                            if (manyToOne == null)
                                manyToOne = tarObjFieldGetter.getAnnotation(ManyToOne.class);
                            if (manyToOne == null)
                                continue;
                            mappedBy = tarObjField.getName();
                            String fromRefCol = null;
                            JoinColumn joinCol = tarObjField.getAnnotation(JoinColumn.class);
                            if (joinCol == null)
                                joinCol = tarObjFieldGetter.getAnnotation(JoinColumn.class);
                            if (joinCol != null)
                                fromRefCol = joinCol.referencedColumnName();
                            if (fromRefCol == null || fromRefCol.trim().length() == 0)
                                fromRefCol = ORMConfigBeanUtil.getIdColumn(t);
                            String fromRefField = ORMConfigBeanUtil.getField(ownClass, fromRefCol);
                            Method fromRefFieldGetter = ru.getGetter(fromRefField);
                            if (fromRefFieldGetter == null)
                                throw new Exception("can not find the 'from ref field field -> " + fromRefField + "' of " + ownClass + " 's getter method");
                            String fromRefVal = null;
                            Object _obj = fromRefFieldGetter.invoke(t);
                            if (_obj != null)
                                fromRefVal = String.valueOf(_obj);
                            DAOFactory.getDeleteDAO(dsName).deleteByFieldIsValue(tarClass, new String[] { tarObjField.getName() }, new String[] { fromRefVal });
                            break;
                        }
                    }
                } else {
                    // 当关联对象不为空的时候，删除这些关联对象
                    for (int i = 0; i < tarList.size(); i++) {
                        Object tarObj = tarList.get(i);
                        if (tarObj == null)
                            continue;
                        //如果这些对象没有ID值，跳过
                        Object tarObjIdVal = ORMConfigBeanUtil.getIdVal(tarObj);
                        if (tarObjIdVal == null)
                            continue;
                        ReflectUtil tarRu = new ReflectUtil(tarObj);
                        if (mappedBy != null && mappedBy.trim().length() > 0) {
                            Method ownFieldSetter = tarRu.getSetter(mappedBy);
                            if (ownFieldSetter == null)
                                continue;
                            // finished
                            DAOFactory.getDeleteDAO(dsName).deleteById(tarObj);
                        } else {
                            JoinTable joinTable = null;
                            if (f.isAnnotationPresent(JoinTable.class)) {
                                joinTable = f.getAnnotation(JoinTable.class);
                            } else if (tarGetter.isAnnotationPresent(JoinTable.class)) {
                                joinTable = tarGetter.getAnnotation(JoinTable.class);
                            } else {
                                // find ownclass in tarObj fields
                                for (Field tarObjField : tarRu.getFields()) {
                                    if (!tarObjField.getType().getName().equals(ownClass.getName()))
                                        continue;
                                    Method tarObjFieldGetter = tarRu.getGetter(tarObjField.getName());
                                    if (tarObjFieldGetter == null)
                                        continue;
                                    ManyToOne manyToOne = tarObjField.getAnnotation(ManyToOne.class);
                                    if (manyToOne == null)
                                        manyToOne = tarObjFieldGetter.getAnnotation(ManyToOne.class);
                                    if (manyToOne == null)
                                        continue;
                                    String fromRefCol = null;
                                    JoinColumn joinCol = tarObjField.getAnnotation(JoinColumn.class);
                                    if (joinCol == null)
                                        joinCol = tarObjFieldGetter.getAnnotation(JoinColumn.class);
                                    if (joinCol != null)
                                        fromRefCol = joinCol.referencedColumnName();
                                    if (fromRefCol == null || fromRefCol.trim().length() == 0)
                                        fromRefCol = ORMConfigBeanUtil.getIdColumn(t);
                                    String fromRefField = ORMConfigBeanUtil.getField(ownClass, fromRefCol);
                                    Method fromRefFieldGetter = ru.getGetter(fromRefField);
                                    if (fromRefFieldGetter == null)
                                        throw new Exception("can not find the 'from ref field field -> " + fromRefField + "' of " + ownClass + " 's getter method");
                                    String fromRefVal = null;
                                    Object _obj = fromRefFieldGetter.invoke(t);
                                    if (_obj != null)
                                        fromRefVal = String.valueOf(_obj);
                                    DAOFactory.getDeleteDAO(dsName).deleteByFieldIsValue(tarClass, new String[] { tarObjField.getName() }, new String[] { fromRefVal });
                                    break;
                                }
                            }
                            if (joinTable != null) {
                                JoinColumn[] froms = joinTable.joinColumns();
                                if (froms == null || froms.length == 0)
                                    continue;
                                String from = froms[0].name();
                                JoinColumn[] tos = joinTable.inverseJoinColumns();
                                if (tos == null || tos.length == 0)
                                    continue;
                                String to = tos[0].name();
                                String relTable = joinTable.name();
                                String fromRefCol = froms[0].referencedColumnName();
                                if (fromRefCol == null || fromRefCol.trim().length() == 0)
                                    fromRefCol = ORMConfigBeanUtil.getIdColumn(t);
                                String fromRefField = ORMConfigBeanUtil.getField(t.getClass(), fromRefCol);
                                Method fromRefFieldGetter = ru.getGetter(fromRefField);
                                if (fromRefFieldGetter == null)
                                    throw new Exception("can not find the 'from ref field -> " + fromRefField + "' of " + t.getClass() + " 's getter method");
                                Object _obj = fromRefFieldGetter.invoke(t);
                                if (_obj == null)
                                    continue;
                                String fromRefVal = String.valueOf(_obj);
                                String toRefCol = tos[0].referencedColumnName();
                                if (toRefCol == null || toRefCol.trim().length() == 0)
                                    toRefCol = ORMConfigBeanUtil.getIdColumn(tarClass);
                                String toRefField = ORMConfigBeanUtil.getField(tarClass, toRefCol);
                                Method toRefFieldGetter = tarRu.getGetter(toRefField);
                                if (toRefFieldGetter == null)
                                    throw new Exception("can not find the 'to ref field -> " + toRefField + "' of " + tarClass + " 's getter method");
                                Object _obj2 = toRefFieldGetter.invoke(tarObj);
                                if (_obj2 == null)
                                    continue;
                                String toRefVal = String.valueOf(_obj2);
                                // delete from relTable where from = ? and to = ? ;
                                String format = "delete from %s where %s = ? and %s = ? ;";
                                String sql = String.format(format, relTable, from, to);
                                // finished
                                DAOFactory.getUpdateDAO(dsName).updateBySQLWithArgs(sql, fromRefVal, toRefVal);
                            }
                        }
                    }
                }
            }
        }
    });
}

Example 2 with ReflectUtil

use of org.eweb4j.util.ReflectUtil in project eweb4j-framework by laiweiwei.

the class OneToManyDAO method select.

/**
	 * 一对多（主从）级联查询
	 */
public void select() throws DAOException {
    if (this.fields == null || this.fields.size() == 0)
        return;
    Class<?> ownClass = ru.getObject().getClass();
    String fromRefVal = null;
    for (Field f : fields) {
        Method tarGetter = ru.getGetter(f.getName());
        if (tarGetter == null)
            continue;
        OneToMany ann = tarGetter.getAnnotation(OneToMany.class);
        if (ann == null) {
            ann = f.getAnnotation(OneToMany.class);
            if (ann == null)
                continue;
        }
        OrderBy orderAnn = tarGetter.getAnnotation(OrderBy.class);
        if (orderAnn == null)
            orderAnn = f.getAnnotation(OrderBy.class);
        Class<?> tarClass = ann.targetEntity();
        if (void.class.isAssignableFrom(tarClass))
            tarClass = ClassUtil.getGenericType(f);
        String orderBy = "";
        if (orderAnn != null && orderAnn.value().trim().length() > 0)
            orderBy = " ORDER BY " + orderAnn.value().replace("t.", tarClass.getSimpleName().toLowerCase() + ".");
        String mappedBy = ann.mappedBy();
        try {
            ReflectUtil tarRu = new ReflectUtil(tarClass);
            List<?> tarList = null;
            JoinTable joinTable = null;
            if (f.isAnnotationPresent(JoinTable.class)) {
                joinTable = f.getAnnotation(JoinTable.class);
            } else if (tarGetter.isAnnotationPresent(JoinTable.class)) {
                joinTable = tarGetter.getAnnotation(JoinTable.class);
            }
            // 如果用户填写了 JoinTable注解，说明是第三方表建立的关联关系，需要查询第三方表和字段才能获取到targetList
            if (joinTable != null) {
                JoinColumn[] froms = joinTable.joinColumns();
                if (froms == null || froms.length == 0)
                    continue;
                String tarTable = joinTable.name();
                String from = froms[0].name();
                String fromRefCol = froms[0].referencedColumnName();
                if (fromRefCol == null || fromRefCol.trim().length() == 0)
                    fromRefCol = ORMConfigBeanUtil.getIdColumn(t);
                String fromRefField = ORMConfigBeanUtil.getField(t.getClass(), fromRefCol);
                Method fromRefFieldGetter = ru.getGetter(fromRefField);
                if (fromRefFieldGetter == null)
                    throw new Exception("can not find the 'from ref field -> " + fromRefField + "' of " + t.getClass() + " 's getter method");
                Object _obj = fromRefFieldGetter.invoke(t);
                if (_obj == null)
                    continue;
                fromRefVal = String.valueOf(_obj);
                String format = "select %s from %s where %s = ?  ;";
                String sql = String.format(format, ORMConfigBeanUtil.getSelectAllColumn(tarClass), tarTable, from) + orderBy;
                // finished
                tarList = DAOFactory.getSelectDAO(dsName).selectBySQL(tarClass, sql, fromRefVal);
            } else {
                // 否则的话按照ManyToOne去查询
                // 如果给定了 mappedBy，直接用这个mappedBy来获取filed，否则遍历。
                Field mappedField = null;
                if (mappedBy != null && mappedBy.trim().length() > 0) {
                    mappedField = tarRu.getField(mappedBy);
                } else {
                    for (Field field : tarRu.getFields()) {
                        if (!field.getType().getName().equals(ownClass.getName()))
                            continue;
                        mappedField = field;
                        mappedBy = mappedField.getName();
                        break;
                    }
                }
                if (mappedField == null)
                    throw new Exception("mapped field of " + tarClass + " not found");
                Method tarObjFieldGetter = tarRu.getGetter(mappedBy);
                if (tarObjFieldGetter == null)
                    continue;
                ManyToOne manyToOne = mappedField.getAnnotation(ManyToOne.class);
                if (manyToOne == null)
                    manyToOne = tarObjFieldGetter.getAnnotation(ManyToOne.class);
                if (manyToOne == null)
                    continue;
                String fromRefCol = null;
                JoinColumn joinCol = mappedField.getAnnotation(JoinColumn.class);
                if (joinCol == null)
                    joinCol = tarObjFieldGetter.getAnnotation(JoinColumn.class);
                if (joinCol != null)
                    fromRefCol = joinCol.referencedColumnName();
                if (fromRefCol == null || fromRefCol.trim().length() == 0)
                    fromRefCol = ORMConfigBeanUtil.getIdColumn(t);
                String fromRefField = ORMConfigBeanUtil.getField(ownClass, fromRefCol);
                Method fromRefFieldGetter = ru.getGetter(fromRefField);
                if (fromRefFieldGetter == null)
                    throw new Exception("can not find the 'from ref field field -> " + fromRefField + "' of " + ownClass + " 's getter method");
                Object _obj = fromRefFieldGetter.invoke(t);
                if (_obj != null)
                    fromRefVal = String.valueOf(_obj);
                String format = "select %s from %s where %s = ?  ;";
                String sql = String.format(format, ORMConfigBeanUtil.getSelectAllColumn(tarClass), ORMConfigBeanUtil.getTable(tarClass, true), ORMConfigBeanUtil.getColumn(tarClass, mappedBy)) + orderBy;
                // finished
                tarList = DAOFactory.getSelectDAO(dsName).selectBySQL(tarClass, sql, fromRefVal);
            }
            if (tarList == null)
                continue;
            Method tarSetter = ru.getSetter(f.getName());
            if (tarSetter == null)
                continue;
            tarSetter.invoke(t, tarList);
        } catch (Exception e) {
            throw new DAOException("", e);
        }
    }
}

Example 3 with ReflectUtil

use of org.eweb4j.util.ReflectUtil in project eweb4j-framework by laiweiwei.

the class ToOneDAO method init.

/**
	 * 初始化
	 * 
	 * @param t
	 * @param fields
	 * @throws DAOException
	 */
public void init(Object t, List<Field> fields) throws DAOException {
    this.t = t;
    this.fields = fields;
    this.ru = new ReflectUtil(this.t);
    this.table = ORMConfigBeanUtil.getTable(t.getClass(), true);
    // 主类的ID属性名
    this.idField = ORMConfigBeanUtil.getIdField(this.t.getClass());
    this.idColumn = ORMConfigBeanUtil.getIdColumn(this.t.getClass());
    this.idGetter = ru.getGetter(idField);
    //		if (idGetter == null)
    //			throw new DAOException("can not find idGetter.", null);
    Object idVal;
    if (idGetter != null) {
        try {
            idVal = idGetter.invoke(this.t);
            this.idVal = idVal == null ? null : String.valueOf(idVal);
        } catch (Exception e) {
            throw new DAOException("", e);
        }
    }
}

Example 4 with ReflectUtil

use of org.eweb4j.util.ReflectUtil in project eweb4j-framework by laiweiwei.

the class ORMConfigBeanUtil method getColumnsOrFields.

/**
	 * get columns through fields
	 * 
	 * @param clazz
	 * @param fields
	 * @param type
	 *            1.getColumns 2.getFields 3.allColumns 4.allFields
	 * 
	 * @return
	 */
private static <T> String[] getColumnsOrFields(T t, String[] strs, int type) {
    Class<?> clazz;
    if (t instanceof Class) {
        clazz = (Class<?>) t;
    } else {
        clazz = t.getClass();
    }
    if (!(t instanceof Class) && Map.class.isAssignableFrom(clazz)) {
        HashMap<String, Object> map = (HashMap<String, Object>) t;
        return (String[]) map.get("columns");
    }
    if (strs == null)
        strs = new String[] { "" };
    String[] result = strs.clone();
    List<String> list = new ArrayList<String>();
    ORMConfigBean ormBean = ORMConfigBeanCache.get(clazz.getName());
    if (ormBean == null) {
        try {
            ReflectUtil ru = new ReflectUtil(clazz);
            // String idColumn = getIdColumn(clazz);
            for (int i = 0; i < strs.length; i++) {
                boolean finished = false;
                Field[] _fields = ru.getFields();
                for (Field _f : _fields) {
                    String pName = _f.getName();
                    JoinColumn jc = _f.getAnnotation(JoinColumn.class);
                    Column c = _f.getAnnotation(Column.class);
                    String col = pName;
                    if (c != null && c.name().trim().length() > 0)
                        col = c.name();
                    if (jc != null && jc.name().trim().length() > 0)
                        col = jc.name();
                    if (finished)
                        break;
                    switch(type) {
                        case 1:
                            int dotIndex = strs[i].indexOf(".");
                            if (dotIndex > 0 && dotIndex < strs[i].length() - 1) {
                                String[] dots = strs[i].split("\\.");
                                StringBuilder builder = new StringBuilder();
                                Class<?> prevCls = null;
                                for (int j = 0; j < dots.length; j++) {
                                    String dot = dots[j];
                                    Field field = ru.getField(dot);
                                    if (field == null && dot.equals(clazz.getSimpleName().toLowerCase())) {
                                        if (builder.length() > 0)
                                            builder.append(".");
                                        builder.append(dot);
                                        prevCls = clazz;
                                    } else if (field != null) {
                                        if (j == dots.length - 1) {
                                            if (builder.length() > 0)
                                                builder.append(".");
                                            builder.append(ORMConfigBeanUtil.getColumn(prevCls, dot));
                                        } else {
                                            Class<?> cls = ClassUtil.getGenericType(field);
                                            if (cls != null) {
                                                if (ORMConfigBeanCache.get(cls.getName()) != null) {
                                                    if (builder.length() > 0)
                                                        builder.append(".");
                                                    builder.append(cls.getSimpleName().toLowerCase());
                                                    prevCls = cls;
                                                    ru = new ReflectUtil(cls);
                                                }
                                            }
                                        }
                                    }
                                }
                                if (builder.length() > 0) {
                                    result[i] = builder.toString();
                                    finished = true;
                                    break;
                                }
                            }
                            if (pName.equals(strs[i])) {
                                result[i] = col;
                                finished = true;
                            }
                            break;
                        case 2:
                            if (col.equals(strs[i])) {
                                result[i] = pName;
                                finished = true;
                            }
                            break;
                        case 3:
                            list.add(col);
                            break;
                        case 4:
                            list.add(pName);
                    }
                }
            }
        } catch (Throwable e) {
        }
    } else {
        try {
            ReflectUtil ru = new ReflectUtil(clazz);
            // String idColumn = getIdColumn(clazz);
            for (int i = 0; i < strs.length; i++) {
                boolean finished = false;
                List<Property> properties = ormBean.getProperty();
                for (Property p : properties) {
                    if (finished)
                        break;
                    switch(type) {
                        case 1:
                            int dotIndex = strs[i].indexOf(".");
                            if (dotIndex > 0 && dotIndex < strs[i].length() - 1) {
                                String[] dots = strs[i].split("\\.");
                                StringBuilder builder = new StringBuilder();
                                Class<?> prevCls = null;
                                for (int j = 0; j < dots.length; j++) {
                                    String dot = dots[j];
                                    Field field = ru.getField(dot);
                                    if (field == null && dot.equals(clazz.getSimpleName().toLowerCase())) {
                                        if (builder.length() > 0)
                                            builder.append(".");
                                        builder.append(dot);
                                        prevCls = clazz;
                                    } else if (field != null) {
                                        if (j == dots.length - 1) {
                                            if (builder.length() > 0)
                                                builder.append(".");
                                            builder.append(ORMConfigBeanUtil.getColumn(prevCls, dot));
                                        } else {
                                            Class<?> cls = ClassUtil.getGenericType(field);
                                            if (cls != null) {
                                                if (ORMConfigBeanCache.get(cls.getName()) != null) {
                                                    if (builder.length() > 0)
                                                        builder.append(".");
                                                    builder.append(cls.getSimpleName().toLowerCase());
                                                    prevCls = cls;
                                                    ru = new ReflectUtil(cls);
                                                }
                                            }
                                        }
                                    }
                                }
                                if (builder.length() > 0) {
                                    result[i] = builder.toString();
                                    finished = true;
                                    break;
                                }
                            }
                            if (p.getName().equals(strs[i])) {
                                result[i] = p.getColumn();
                                finished = true;
                            }
                            break;
                        case 2:
                            if (p.getColumn().equals(strs[i])) {
                                result[i] = p.getName();
                                finished = true;
                            }
                            break;
                        case 3:
                            list.add(p.getColumn());
                            break;
                        case 4:
                            list.add(p.getName());
                    }
                }
            }
        } catch (Exception e) {
        }
    }
    return list.isEmpty() ? result : list.toArray(new String[] {});
}

Example 5 with ReflectUtil

use of org.eweb4j.util.ReflectUtil in project eweb4j-framework by laiweiwei.

the class ORMConfigBeanWriter method write.

/**
	 * 将某个Class写入到目标xml文件中
	 * 
	 * @param filePath
	 *            文件相对路径
	 * @param clazzs
	 * @return
	 */
public static String write(String filePath, Class<?>... clazzs) {
    String error = null;
    File file = new File(ConfigConstant.CONFIG_BASE_PATH + filePath);
    if (filePath != null && clazzs != null && clazzs.length > 0) {
        List<ORMConfigBean> ormList = new ArrayList<ORMConfigBean>();
        try {
            for (int i = 0; i < clazzs.length; ++i) {
                Class<?> clazz = clazzs[i];
                String clsName = clazz.getSimpleName();
                Entity entity = clazz.getAnnotation(Entity.class);
                if (entity == null && !clsName.endsWith("PO") && !clsName.endsWith("POJO") && !clsName.endsWith("Entity") && !clsName.endsWith("Model")) {
                    return null;
                }
                Table tableAnn = clazz.getAnnotation(Table.class);
                String table = tableAnn == null ? "" : tableAnn.name();
                table = "".equals(table.trim()) ? clsName : table;
                ORMConfigBean ormBean = new ORMConfigBean();
                ormBean.setClazz(clazz.getName());
                ormBean.setId(clazz.getSimpleName());
                ormBean.setTable(table);
                ReflectUtil ru;
                ru = new ReflectUtil(clazz);
                List<Property> pList = new ArrayList<Property>();
                for (Field f : ru.getFields()) {
                    String name = f.getName();
                    Method getter = ru.getGetter(name);
                    Column colAnn = getter.getAnnotation(Column.class);
                    if (colAnn == null) {
                        colAnn = f.getAnnotation(Column.class);
                        if (colAnn == null)
                            continue;
                    }
                    Id idAnn = f.getAnnotation(Id.class);
                    if (idAnn == null) {
                        idAnn = getter.getAnnotation(Id.class);
                        if (idAnn == null)
                            continue;
                    }
                    Property p = new Property();
                    p.setAutoIncrement("1");
                    p.setPk("1");
                    Pk pkAnn = f.getAnnotation(Pk.class);
                    if (pkAnn != null) {
                        p.setPk("1");
                    }
                    String column = colAnn.name();
                    column = "".equals(column.trim()) ? name : column;
                    p.setName(name);
                    p.setColumn(column);
                    p.setType(f.getType().getName());
                    pList.add(p);
                }
                ormBean.setProperty(pList);
                ormList.add(ormBean);
            }
            BeanXMLUtil.getBeanXMLWriter(file, ormList).write();
        } catch (Exception e) {
            error = e.getMessage();
            e.printStackTrace();
        }
    } else {
        error = "Class参数不能为空";
    }
    return error;
}