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com.ailyr.tool.db.Entity Maven / Gradle / Ivy
package com.ailyr.tool.db;
import java.nio.charset.Charset;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.RowId;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import com.ailyr.tool.core.collection.CollectionUtil;
import com.ailyr.tool.core.lang.Dict;
import com.ailyr.tool.core.util.ArrayUtil;
import com.ailyr.tool.core.util.CharsetUtil;
import com.ailyr.tool.core.util.ReflectUtil;
import com.ailyr.tool.core.util.StrUtil;
/**
* 数据实体对象
* 数据实体类充当两个角色:
* 1. 数据的载体,一个Entity对应数据库中的一个row
* 2. SQL条件,Entity中的每一个字段对应一个条件,字段值对应条件的值
*
* @author loolly
*
*/
public class Entity extends Dict {
private static final long serialVersionUID = -1951012511464327448L;
// --------------------------------------------------------------- Static method start
/**
* 创建Entity
*
* @return Entity
*/
public static Entity create() {
return new Entity();
}
/**
* 创建Entity
*
* @param tableName 表名
* @return Entity
*/
public static Entity create(String tableName) {
return new Entity(tableName);
}
/**
* 将PO对象转为Entity
*
* @param Bean对象类型
* @param bean Bean对象
* @return Entity
*/
public static Entity parse(T bean) {
return create(null).parseBean(bean);
}
/**
* 将PO对象转为Entity
*
* @param Bean对象类型
* @param bean Bean对象
* @param isToUnderlineCase 是否转换为下划线模式
* @param ignoreNullValue 是否忽略值为空的字段
* @return Entity
*/
public static Entity parse(T bean, boolean isToUnderlineCase, boolean ignoreNullValue) {
return create(null).parseBean(bean, isToUnderlineCase, ignoreNullValue);
}
/**
* 将PO对象转为Entity,并采用下划线法转换字段
*
* @param Bean对象类型
* @param bean Bean对象
* @return Entity
*/
public static Entity parseWithUnderlineCase(T bean) {
return create(null).parseBean(bean, true, true);
}
// --------------------------------------------------------------- Static method end
/* 表名 */
private String tableName;
/* 字段名列表,用于限制加入的字段的值 */
private Set fieldNames;
// --------------------------------------------------------------- Constructor start
public Entity() {
}
/**
* 构造
*
* @param tableName 数据表名
*/
public Entity(String tableName) {
this.tableName = tableName;
}
// --------------------------------------------------------------- Constructor end
// --------------------------------------------------------------- Getters and Setters start
/**
* @return 获得表名
*/
public String getTableName() {
return tableName;
}
/**
* 设置表名
*
* @param tableName 表名
* @return 本身
*/
public Entity setTableName(String tableName) {
this.tableName = tableName;
return this;
}
/**
*
* @return 字段集合
*/
public Set getFieldNames() {
return this.fieldNames;
}
/**
* 设置字段列表,用于限制加入的字段的值
*
* @param fieldNames 字段列表
* @return 自身
*/
public Entity setFieldNames(List fieldNames) {
if (CollectionUtil.isNotEmpty(fieldNames)) {
this.fieldNames = new HashSet(fieldNames);
}
return this;
}
/**
* 设置字段列表,用于限制加入的字段的值
*
* @param fieldNames 字段列表
* @return 自身
*/
public Entity setFieldNames(String... fieldNames) {
if (ArrayUtil.isNotEmpty(fieldNames)) {
this.fieldNames = CollectionUtil.newHashSet(fieldNames);
}
return this;
}
/**
* 添加字段列表
*
* @param fieldNames 字段列表
* @return 自身
*/
public Entity addFieldNames(String... fieldNames) {
if (ArrayUtil.isNotEmpty(fieldNames)) {
if (null == this.fieldNames) {
return setFieldNames(fieldNames);
} else {
for (String fieldName : fieldNames) {
this.fieldNames.add(fieldName);
}
}
}
return this;
}
// --------------------------------------------------------------- Getters and Setters end
/**
* 将值对象转换为Entity
* 类名会被当作表名,小写第一个字母
*
* @param Bean对象类型
* @param bean Bean对象
* @return 自己
*/
@Override
public Entity parseBean(T bean) {
if (StrUtil.isBlank(this.tableName)) {
this.setTableName(StrUtil.lowerFirst(bean.getClass().getSimpleName()));
}
return (Entity) super.parseBean(bean);
}
/**
* 将值对象转换为Entity
* 类名会被当作表名,小写第一个字母
*
* @param Bean对象类型
* @param bean Bean对象
* @param isToUnderlineCase 是否转换为下划线模式
* @param ignoreNullValue 是否忽略值为空的字段
* @return 自己
*/
@Override
public Entity parseBean(T bean, boolean isToUnderlineCase, boolean ignoreNullValue) {
if (StrUtil.isBlank(this.tableName)) {
String simpleName = bean.getClass().getSimpleName();
this.setTableName(isToUnderlineCase ? StrUtil.toUnderlineCase(simpleName) : StrUtil.lowerFirst(simpleName));
}
return (Entity) super.parseBean(bean, isToUnderlineCase, ignoreNullValue);
}
// -------------------------------------------------------------------- Put and Set start
/**
* PUT方法做了过滤限制,如果此实体限制了属性名,则忽略限制名列表外的字段名
*
* @param key 名
* @param value 值
*/
@Override
public Object put(String key, Object value) {
if (CollectionUtil.isEmpty(fieldNames) || fieldNames.contains(key)) {
super.put(key, value);
}
return null;
}
@Override
public Entity set(String field, Object value) {
return (Entity) super.set(field, value);
}
@Override
public Entity setIgnoreNull(String field, Object value) {
return (Entity) super.setIgnoreNull(field, value);
}
// -------------------------------------------------------------------- Put and Set end
// -------------------------------------------------------------------- Get start
/**
* 获得Clob类型结果
*
* @param field 参数
* @return Clob
*/
public Clob getClob(String field) {
return get(field, null);
}
/**
* 获得Blob类型结果
*
* @param field 参数
* @return Blob
* @since 3.0.6
*/
public Blob getBlob(String field) {
return get(field, null);
}
@Override
public Time getTime(String field) {
Object obj = get(field);
Time result = null;
if (null != obj) {
try {
result = (Time) obj;
} catch (Exception e) {
// try oracle.sql.TIMESTAMP
result = ReflectUtil.invoke(obj, "timeValue", new Object[] {});
}
}
return result;
}
@Override
public Date getDate(String field) {
Object obj = get(field);
Date result = null;
if (null != obj) {
try {
result = (Date) obj;
} catch (Exception e) {
// try oracle.sql.TIMESTAMP
result = ReflectUtil.invoke(obj, "dateValue", new Object[] {});
}
}
return result;
}
@Override
public Timestamp getTimestamp(String field) {
Object obj = get(field);
Timestamp result = null;
if (null != obj) {
try {
result = (Timestamp) obj;
} catch (Exception e) {
// try oracle.sql.TIMESTAMP
result = ReflectUtil.invoke(obj, "timestampValue", new Object[] {});
}
}
return result;
}
@Override
public String getStr(String field) {
return getStr(field, CharsetUtil.CHARSET_UTF_8);
}
/**
* 获得字符串值
* 支持Clob、Blob、RowId
*
* @param field 字段名
* @param charset 编码
* @return 字段对应值
* @since 3.0.6
*/
public String getStr(String field, Charset charset) {
final Object obj = get(field);
if (obj instanceof Clob) {
return DbUtil.clobToStr((Clob) obj);
} else if (obj instanceof Blob) {
return DbUtil.blobToStr((Blob) obj, charset);
} else if (obj instanceof RowId) {
final RowId rowId = (RowId) obj;
return StrUtil.str(rowId.getBytes(), charset);
}
return super.getStr(field);
}
/**
* 获得rowid
*
* @return RowId
*/
public RowId getRowId() {
return getRowId("ROWID");
}
/**
* 获得rowid
*
* @param field rowid属性名
* @return RowId
*/
public RowId getRowId(String field) {
Object obj = this.get(field);
if (null == obj) {
return null;
}
if (obj instanceof RowId) {
return (RowId) obj;
}
throw new DbRuntimeException("Value of field [{}] is not a rowid!", field);
}
// -------------------------------------------------------------------- Get end
// -------------------------------------------------------------------- 特殊方法 start
@Override
public Entity clone() {
return (Entity) super.clone();
}
// -------------------------------------------------------------------- 特殊方法 end
@Override
public String toString() {
return "Entity {tableName=" + tableName + ", fieldNames=" + fieldNames + ", fields=" + super.toString() + "}";
}
}