Completed meta service.

src/main/java/run/halo/app/model/params/BaseMetaParam.java

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+package run.halo.app.model.params;
+
+import lombok.Data;
+import run.halo.app.model.dto.base.InputConverter;
+import run.halo.app.utils.ReflectionUtils;
+
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.Size;
+import java.lang.reflect.ParameterizedType;
+
+/**
+ * Base meta param.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Data
+public abstract class BaseMetaParam<META> implements InputConverter<META> {
+
+    @NotBlank(message = "文章id不能为空")
+    private Integer postId;
+
+    @NotBlank(message = "Meta key 不能为空")
+    @Size(max = 1023, message = "Meta key 的字符长度不能超过 {max}")
+    private String key;
+
+    @NotBlank(message = "Meta value 不能为空")
+    @Size(max = 1023, message = "Meta value 的字符长度不能超过 {max}")
+    private String value;
+
+    @Override
+    public ParameterizedType parameterizedType() {
+        return ReflectionUtils.getParameterizedTypeBySuperClass(BaseMetaParam.class, this.getClass());
+    }
+}

src/main/java/run/halo/app/model/params/PostMetaParam.java

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+package run.halo.app.model.params;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import run.halo.app.model.entity.PostMeta;
+
+/**
+ * Post meta param.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Data
+@ToString(callSuper = true)
+@EqualsAndHashCode(callSuper = true)
+public class PostMetaParam extends BaseMetaParam<PostMeta> {
+}

src/main/java/run/halo/app/model/params/SheetMetaParam.java

@@ -0,0 +1,19 @@
+package run.halo.app.model.params;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.ToString;
+import run.halo.app.model.entity.SheetMeta;
+
+/**
+ * Sheet meta param.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Data
+@ToString(callSuper = true)
+@EqualsAndHashCode(callSuper = true)
+public class SheetMetaParam extends BaseMetaParam<SheetMeta> {
+}

src/main/java/run/halo/app/repository/PostMetaRepository.java

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+package run.halo.app.repository;
+
+import run.halo.app.model.entity.PostMeta;
+import run.halo.app.repository.base.BaseMetaRepository;
+
+/**
+ * PostMeta repository.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+public interface PostMetaRepository extends BaseMetaRepository<PostMeta> {
+}

src/main/java/run/halo/app/repository/SheetMetaRepository.java

@@ -0,0 +1,14 @@
+package run.halo.app.repository;
+
+import run.halo.app.model.entity.SheetMeta;
+import run.halo.app.repository.base.BaseMetaRepository;
+
+/**
+ * SheetMeta repository.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+public interface SheetMetaRepository extends BaseMetaRepository<SheetMeta> {
+}

src/main/java/run/halo/app/repository/base/BaseMetaRepository.java

@@ -0,0 +1,28 @@
+package run.halo.app.repository.base;
+
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+import org.springframework.data.repository.NoRepositoryBean;
+import org.springframework.lang.NonNull;
+import run.halo.app.model.entity.BaseMeta;
+
+import java.util.List;
+
+/**
+ * Base meta repository.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@NoRepositoryBean
+public interface BaseMetaRepository<META extends BaseMeta> extends BaseRepository<META, Long>, JpaSpecificationExecutor<META> {
+
+    /**
+     * Finds all metas by post id.
+     *
+     * @param postId post id must not be null
+     * @return a list of meta
+     */
+    @NonNull
+    List<META> findAllByPostId(@NonNull Integer postId);
+}

src/main/java/run/halo/app/service/PostMetaService.java

@@ -0,0 +1,14 @@
+package run.halo.app.service;
+
+import run.halo.app.model.entity.PostMeta;
+import run.halo.app.service.base.BaseMetaService;
+
+/**
+ * Post meta service interface.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+public interface PostMetaService extends BaseMetaService<PostMeta> {
+}

src/main/java/run/halo/app/service/SheetMetaService.java

@@ -0,0 +1,14 @@
+package run.halo.app.service;
+
+import run.halo.app.model.entity.SheetMeta;
+import run.halo.app.service.base.BaseMetaService;
+
+/**
+ * Sheet meta service interface.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+public interface SheetMetaService extends BaseMetaService<SheetMeta> {
+}

src/main/java/run/halo/app/service/base/BaseMetaService.java

@@ -0,0 +1,62 @@
+package run.halo.app.service.base;
+
+import org.springframework.lang.NonNull;
+import run.halo.app.model.entity.BaseMeta;
+import run.halo.app.model.params.BaseMetaParam;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Base meta service interface.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+public interface BaseMetaService<META extends BaseMeta> extends CrudService<META, Long> {
+
+    /**
+     * Lists metas by post id.
+     *
+     * @param postId post id must not be null
+     * @return a list of meta
+     */
+    @NonNull
+    List<META> listBy(@NonNull Integer postId);
+
+
+    /**
+     * Creates a meta by meta.
+     *
+     * @param meta meta must not be null
+     * @return created meta
+     */
+    @NonNull
+    @Override
+    META create(@NonNull META meta);
+
+    /**
+     * Creates a meta by meta param.
+     *
+     * @param metaParam meta param must not be null
+     * @return created meta
+     */
+    @NonNull
+    META createBy(@NonNull BaseMetaParam<META> metaParam);
+
+    /**
+     * Target validation.
+     *
+     * @param targetId target id must not be null (post id, sheet id)
+     */
+    void validateTarget(@NonNull Integer targetId);
+
+    /**
+     * Convert to map.
+     *
+     * @param metas a list of metas
+     * @return a map of metas
+     */
+    Map<String, Object> convertToMap(List<META> metas);
+}

src/main/java/run/halo/app/service/impl/BaseMetaServiceImpl.java

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+package run.halo.app.service.impl;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.util.Assert;
+import org.springframework.util.CollectionUtils;
+import run.halo.app.model.entity.BaseMeta;
+import run.halo.app.model.params.BaseMetaParam;
+import run.halo.app.repository.base.BaseMetaRepository;
+import run.halo.app.service.base.AbstractCrudService;
+import run.halo.app.service.base.BaseMetaService;
+import run.halo.app.utils.ServiceUtils;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Base meta service implementation.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Slf4j
+public abstract class BaseMetaServiceImpl<META extends BaseMeta> extends AbstractCrudService<META, Long> implements BaseMetaService<META> {
+
+    private final BaseMetaRepository<META> baseMetaRepository;
+
+
+    public BaseMetaServiceImpl(BaseMetaRepository<META> baseMetaRepository) {
+        super(baseMetaRepository);
+        this.baseMetaRepository = baseMetaRepository;
+    }
+
+    @Override
+    public List<META> listBy(Integer postId) {
+        Assert.notNull(postId, "Post id must not be null");
+        return baseMetaRepository.findAllByPostId(postId);
+    }
+
+    @Override
+    public META create(META meta) {
+        Assert.notNull(meta, "Domain must not be null");
+
+        // Check post id
+        if (!ServiceUtils.isEmptyId(meta.getPostId())) {
+            validateTarget(meta.getPostId());
+        }
+
+        // Create meta
+        return super.create(meta);
+    }
+
+    @Override
+    public META createBy(BaseMetaParam<META> metaParam) {
+        Assert.notNull(metaParam, "Meta param must not be null");
+        return create(metaParam.convertTo());
+    }
+
+    @Override
+    public Map<String, Object> convertToMap(List<META> metas) {
+        if (CollectionUtils.isEmpty(metas)) {
+            return Collections.emptyMap();
+        }
+
+        Map<String, Object> result = new HashMap<>();
+        metas.forEach(meta -> result.put(meta.getKey(), meta.getValue()));
+
+        return result;
+    }
+}

src/main/java/run/halo/app/service/impl/PostMetaServiceImpl.java

@@ -0,0 +1,38 @@
+package run.halo.app.service.impl;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import run.halo.app.exception.NotFoundException;
+import run.halo.app.model.entity.PostMeta;
+import run.halo.app.repository.PostMetaRepository;
+import run.halo.app.repository.PostRepository;
+import run.halo.app.service.PostMetaService;
+
+/**
+ * Post meta service implementation class.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Slf4j
+@Service
+public class PostMetaServiceImpl extends BaseMetaServiceImpl<PostMeta> implements PostMetaService {
+
+    private final PostMetaRepository postMetaRepository;
+
+    private final PostRepository postRepository;
+
+    public PostMetaServiceImpl(PostMetaRepository postMetaRepository,
+                               PostRepository postRepository) {
+        super(postMetaRepository);
+        this.postMetaRepository = postMetaRepository;
+        this.postRepository = postRepository;
+    }
+
+    @Override
+    public void validateTarget(Integer postId) {
+        postRepository.findById(postId)
+                .orElseThrow(() -> new NotFoundException("该文章不存在或已删除").setErrorData(postId));
+    }
+}

src/main/java/run/halo/app/service/impl/SheetMetaServiceImpl.java

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+package run.halo.app.service.impl;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+import run.halo.app.exception.NotFoundException;
+import run.halo.app.model.entity.SheetMeta;
+import run.halo.app.repository.SheetMetaRepository;
+import run.halo.app.repository.SheetRepository;
+import run.halo.app.service.SheetMetaService;
+
+/**
+ * Sheet meta service implementation class.
+ *
+ * @author ryanwang
+ * @author ikaisec
+ * @date 2019-08-04
+ */
+@Slf4j
+@Service
+public class SheetMetaServiceImpl extends BaseMetaServiceImpl<SheetMeta> implements SheetMetaService {
+
+    private final SheetMetaRepository sheetMetaRepository;
+
+    private final SheetRepository sheetRepository;
+
+    public SheetMetaServiceImpl(SheetMetaRepository sheetMetaRepository,
+                                SheetRepository sheetRepository) {
+        super(sheetMetaRepository);
+        this.sheetMetaRepository = sheetMetaRepository;
+        this.sheetRepository = sheetRepository;
+    }
+
+    @Override
+    public void validateTarget(Integer sheetId) {
+        sheetRepository.findById(sheetId)
+                .orElseThrow(() -> new NotFoundException("该页面不存在或已删除").setErrorData(sheetId));
+    }
+}