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support equals or like Example for page

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Timi
2025-12-08 16:56:41 +08:00
parent 7654c3a360
commit 75c8f556a8
5 changed files with 76 additions and 39 deletions
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34
src/main/java/com/imyeyu/spring/bean/Page.java
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@ -13,12 +13,14 @@ import java.util.LinkedHashMap;
* @author 夜雨 * @author 夜雨
* @version 2023-06-02 14:47 * @version 2023-06-02 14:47
*/ */
public class Page extends BasePage { public class Page<T> extends BasePage {
protected T equalsExample;
protected T likeExample;
protected LinkedHashMap<String, BaseMapper.OrderType> orderMap; protected LinkedHashMap<String, BaseMapper.OrderType> orderMap;
protected LinkedHashMap<String, String> likeMap;
public Page() { public Page() {
} }
@ -30,10 +32,26 @@ public class Page extends BasePage {
return (long) index * size; return (long) index * size;
} }
public int getLimit() { public long getLimit() {
return size; return size;
} }
public T getEqualsExample() {
return equalsExample;
}
public void setEqualsExample(T equalsExample) {
this.equalsExample = equalsExample;
}
public T getLikeExample() {
return likeExample;
}
public void setLikeExample(T likeExample) {
this.likeExample = likeExample;
}
public LinkedHashMap<String, BaseMapper.OrderType> getOrderMap() { public LinkedHashMap<String, BaseMapper.OrderType> getOrderMap() {
return orderMap; return orderMap;
} }
@ -46,12 +64,4 @@ public class Page extends BasePage {
orderMap = TimiJava.firstNotNull(orderMap, new LinkedHashMap<>()); orderMap = TimiJava.firstNotNull(orderMap, new LinkedHashMap<>());
orderMap.put(Text.camelCase2underscore(field), orderType); orderMap.put(Text.camelCase2underscore(field), orderType);
} }
public LinkedHashMap<String, String> getLikeMap() {
return likeMap;
}
public void setLikeMap(LinkedHashMap<String, String> likeMap) {
this.likeMap = likeMap;
}
} }

6
src/main/java/com/imyeyu/spring/mapper/BaseMapper.java
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@ -47,7 +47,7 @@ public interface BaseMapper<T, P> {
* @return 数据列表 * @return 数据列表
*/ */
@SelectProvider(type = SQLProvider.class, method = "listByPage") @SelectProvider(type = SQLProvider.class, method = "listByPage")
List<T> listByPage(Page page); List<T> listByPage(Page<T> page);
/** /**
* 根据 Page 对象统计数据量 * 根据 Page 对象统计数据量
@ -56,7 +56,7 @@ public interface BaseMapper<T, P> {
* @return 数据量 * @return 数据量
*/ */
@SelectProvider(type = SQLProvider.class, method = "countByPage") @SelectProvider(type = SQLProvider.class, method = "countByPage")
long countByPage(Page page); long countByPage(Page<T> page);
/** /**
* 分页查询 * 分页查询
@ -64,7 +64,7 @@ public interface BaseMapper<T, P> {
* @param page 分页参数 * @param page 分页参数
* @return 分页结果 * @return 分页结果
*/ */
default PageResult<T> page(Page page) { default PageResult<T> page(Page<T> page) {
PageResult<T> result = new PageResult<>(); PageResult<T> result = new PageResult<>();
result.setTotal(countByPage(page)); result.setTotal(countByPage(page));
result.setList(listByPage(page)); result.setList(listByPage(page));

2
src/main/java/com/imyeyu/spring/service/AbstractEntityService.java
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@ -33,7 +33,7 @@ public abstract class AbstractEntityService<T, P> implements BaseService<T, P> {
} }
@Override @Override
public PageResult<T> page(Page page) { public PageResult<T> page(Page<T> page) {
checkMapper(); checkMapper();
return baseMapper.page(page); return baseMapper.page(page);
} }

2
src/main/java/com/imyeyu/spring/service/PageableService.java
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@ -18,5 +18,5 @@ public interface PageableService<T> {
* @param page 页面查询参数 * @param page 页面查询参数
* @return 查询页面结果 * @return 查询页面结果
*/ */
PageResult<T> page(Page page); PageResult<T> page(Page<T> page);
} }

71
src/main/java/com/imyeyu/spring/util/SQLProvider.java
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@ -50,25 +50,34 @@ public class SQLProvider {
* @param page 分页参数 * @param page 分页参数
* @return SQL * @return SQL
*/ */
public String listByPage(ProviderContext context, @Param("page") Page page) { public String listByPage(ProviderContext context, @Param("page") Page<?> page) {
EntityMeta meta = getEntityMeta(context); EntityMeta meta = getEntityMeta(context);
StringBuilder sql = new StringBuilder(); StringBuilder sql = new StringBuilder();
sql.append("SELECT %s FROM `%s` WHERE 1 = 1".formatted(meta.selectAllClause, meta.table)); sql.append("SELECT %s FROM `%s` WHERE 1 = 1".formatted(meta.selectAllClause, meta.table));
// 处理软删除
if (meta.canDelete) { if (meta.canDelete) {
sql.append(" AND (`deleted_at` IS NULL OR %s < `deleted_at`)".formatted(Time.now())); sql.append(" AND (`deleted_at` IS NULL OR %s < `deleted_at`)".formatted(Time.now()));
} }
// 处理模糊查询 if (TimiJava.isNotEmpty(page.getEqualsExample())) {
if (TimiJava.isNotEmpty(page.getLikeMap())) { // 精准查询
for (Map.Entry<String, String> item : page.getLikeMap().entrySet()) { Object obj = page.getEqualsExample();
sql.append(" AND `%s` LIKE CONCAT('%%', #{likeMap.%s}, '%%')".formatted( EntityMeta metaExample = getEntityMeta(obj.getClass());
Text.camelCase2underscore(item.getKey()), String conditionClause = metaExample.fieldColumnList.stream()
item.getKey() .filter(fc -> fc.isNotNull(obj))
)); .map(fc -> "`%s` = '%s'".formatted(fc.columnName, fc.getAsString(obj)))
} .collect(Collectors.joining(" AND "));
sql.append(conditionClause);
} }
// 处理排序 if (TimiJava.isNotEmpty(page.getLikeExample())) {
// 模糊查询
Object obj = page.getLikeExample();
EntityMeta metaExample = getEntityMeta(obj.getClass());
String conditionClause = metaExample.fieldColumnList.stream()
.filter(fc -> fc.isNotNull(obj))
.map(fc -> "`%s` LIKE CONCAT('%%', '%s', '%%')".formatted(fc.columnName, fc.getAsString(obj)))
.collect(Collectors.joining(" AND "));
sql.append(conditionClause);
}
// 排序
if (TimiJava.isNotEmpty(page.getOrderMap())) { if (TimiJava.isNotEmpty(page.getOrderMap())) {
sql.append(" ORDER BY "); sql.append(" ORDER BY ");
for (Map.Entry<String, BaseMapper.OrderType> item : page.getOrderMap().entrySet()) { for (Map.Entry<String, BaseMapper.OrderType> item : page.getOrderMap().entrySet()) {
@ -99,22 +108,32 @@ public class SQLProvider {
* @param page 分页参数 * @param page 分页参数
* @return SQL * @return SQL
*/ */
public String countByPage(ProviderContext context, @Param("page") com.imyeyu.spring.bean.Page page) { public String countByPage(ProviderContext context, @Param("page") Page<?> page) {
EntityMeta meta = getEntityMeta(context); EntityMeta meta = getEntityMeta(context);
StringBuilder sql = new StringBuilder(); StringBuilder sql = new StringBuilder();
sql.append("SELECT COUNT(*) FROM `%s` WHERE 1 = 1".formatted(meta.table)); sql.append("SELECT COUNT(*) FROM `%s` WHERE 1 = 1".formatted(meta.table));
// 处理软删除
if (meta.canDelete) { if (meta.canDelete) {
sql.append(" AND (`deleted_at` IS NULL OR %s < `deleted_at`)".formatted(Time.now())); sql.append(" AND (`deleted_at` IS NULL OR %s < `deleted_at`)".formatted(Time.now()));
} }
// 处理模糊查询 if (TimiJava.isNotEmpty(page.getEqualsExample())) {
if (TimiJava.isNotEmpty(page.getLikeMap())) { // 精准查询
for (Map.Entry<String, String> item : page.getLikeMap().entrySet()) { Object obj = page.getEqualsExample();
sql.append(" AND `%s` LIKE CONCAT('%%', #{likeMap.%s}, '%%')".formatted( EntityMeta metaExample = getEntityMeta(obj.getClass());
Text.camelCase2underscore(item.getKey()), String conditionClause = metaExample.fieldColumnList.stream()
item.getKey() .filter(fc -> fc.isNotNull(obj))
)); .map(fc -> "`%s` = '%s'".formatted(fc.columnName, fc.getAsString(obj)))
} .collect(Collectors.joining(" AND "));
sql.append(conditionClause);
}
if (TimiJava.isNotEmpty(page.getLikeExample())) {
// 模糊查询
Object obj = page.getLikeExample();
EntityMeta metaExample = getEntityMeta(obj.getClass());
String conditionClause = metaExample.fieldColumnList.stream()
.filter(fc -> fc.isNotNull(obj))
.map(fc -> "`%s` LIKE CONCAT('%%', '%s', '%%')".formatted(fc.columnName, fc.getAsString(obj)))
.collect(Collectors.joining(" AND "));
sql.append(conditionClause);
} }
return sql.toString(); return sql.toString();
} }
@ -528,6 +547,14 @@ public class SQLProvider {
return !isNull(entity); return !isNull(entity);
} }
public String getAsString(Object obj) {
try {
return field.get(obj).toString();
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
}
public Field getField() { public Field getField() {
return field; return field;
} }