ES API

Ⅰ、Overview

EnhanceModel is the core abstract base class for implementing read-write separation in the Oinone framework, providing the capability to write data to the database (DB) while enabling efficient retrieval through Elasticsearch (ES). By inheriting from EnhanceModel, business models automatically gain the following features:

  • Data Synchronization: The synchronize() method implements two-way synchronization between DB and ES
  • Search Capability: The search() method provides full-text search and complex queries based on ES
  • Logical Deletion: Built-in isDeleted field supports soft deletion mode
  • Extensibility: Supports custom data synchronization logic and search algorithms

Ⅱ、EnhanceModel Usage Guide

(Ⅰ) Read-Write Separation Implementation

1. Inherit from EnhanceModel

@Model(displayName = "测试EnhanceModel")
@Model.model(TestModelEnhance.MODEL_MODEL)
@Model.Advanced(type = ModelTypeEnum.PROXY, inherited = {EnhanceModel.MODEL_MODEL})
@Enhance(shards = "3", replicas = "1", reAlias = true, increment= IncrementEnum.OPEN)
public class TestModelEnhance extends TestModel {
    public static final String MODEL_MODEL="test.TestModelEnhance";

    // Model field definitions
    @Field(displayName = "nick")
    private String nick;

}

2. Override Core Methods

MethodFunctionOverride Scenario
synchronize()Data synchronization logic (DB→ES)Custom data conversion logic
search()ES query logicCustom search conditions/highlighting/sorting
queryPage()Pagination query entryEnhanced models need to override through the Action class

3. @Enhance Annotation Details

@Enhance(
    index = "custom_index",    // Custom index name
    shards = "5",              // Number of shards
    replicas = "1",            // Number of replicas
    increment = IncrementEnum.OPEN,  // Enable incremental synchronization
    reAlias = true,            // Update alias after full synchronization
    analyzers = {
        @Analyzer(
            value = "content",
            analyzer = IkAnalyzer.SMART,
            searchAnalyzer = IkSearchAnalyzer.SMART
        )
    }
)

(Ⅱ) Custom Synchronization Logic

@Override
@Function.Advanced(displayName = "同步数据", type = FunctionTypeEnum.UPDATE)
@Function(summary = "数据同步函数")
public List<TestModelEnhance> synchronize(List<TestModelEnhance> data) {
    data.forEach(item -> {
        item.setNick(item.getName() + "_processed");
    });
    return data;
}

(Ⅲ) Custom Search Logic

@Override
@Function(
    summary = "搜索函数",
    openLevel = {FunctionOpenEnum.LOCAL, FunctionOpenEnum.REMOTE, FunctionOpenEnum.API}
)
@pro.shushi.pamirs.meta.annotation.Function.Advanced(
    type = {FunctionTypeEnum.QUERY},
    category = FunctionCategoryEnum.QUERY_PAGE,
    managed = true
)
public Pagination<TestModelEnhance> search(Pagination<TestModelEnhance> page, IWrapper<TestModelEnhance> wrapper) {
    // Process and customize page and wrapper parameters
    return ((ElasticSearchApi)CommonApiFactory.getApi(ElasticSearchApi.class)).search(page, queryWrapper);
}

(Ⅳ) Using Native elasticsearchClient

    @Override
    @SuppressWarnings({"rawtypes"})
    public <T> Pagination<T> search(Pagination<T> page, IWrapper<T> queryWrapper) {
        String modelModel = queryWrapper.getModel();
        if (null == modelModel || modelModel.isEmpty()) {
            return page;
        }
        ModelConfig modelCfg = PamirsSession.getContext().getModelConfig(modelModel);
        if (null == modelCfg) {
            return page;
        }
        String rsql = queryWrapper.getOriginRsql();
        if (StringUtils.isBlank(rsql)) {
            rsql = "id>0";
        }
        BoolQuery.Builder queryBuilder = ElasticRSQLHelper.parseRSQL(modelCfg, rsql);
        TermQuery isDeletedTerm = QueryBuilders.term()
                .queryName(IS_DELETED)
                .field(IS_DELETED).value(0)
                .build();
        BoolQuery.Builder builder = QueryBuilders.bool().must(new Query(queryBuilder.build()));
        builder.must(new Query(isDeletedTerm));
        String alias = IndexNaming.aliasByModel(modelModel);
        Query query = new Query(builder.build());
        log.info("{}", query);
        List<Order> orders = Optional.ofNullable(page.getSort()).map(Sort::getOrders).orElse(new ArrayList<>());
        int currentPage = Optional.ofNullable(page.getCurrentPage()).orElse(1);
        Long size = Optional.ofNullable(page.getSize()).orElse(10L);
        int pageSize = size.intValue();
        List<SortOptions> sortOptions = new ArrayList<>();
        if (CollectionUtils.isEmpty(orders)) {
            orders.add(new Order(SortDirectionEnum.DESC, ID));
            orders.add(new Order(SortDirectionEnum.DESC, CREATE_DATE));
        }
        for (Order order : orders) {
            sortOptions.add(new SortOptions.Builder()
                    .field(SortOptionsBuilders.field()
                            .field(order.getField())
                            .order(SortDirectionEnum.DESC.equals(order.getDirection()) ? SortOrder.Desc : SortOrder.Asc)
                            .build())
                    .build());
        }
        SearchRequest request = new SearchRequest.Builder()
                .index(alias)
                .from((currentPage - 1) * pageSize)
                .size(pageSize)
                .sort(sortOptions)
                .query(query)
                .highlight(_builder ->
                        _builder.numberOfFragments(4)
                                .fragmentSize(50)
                                .type(HighlighterType.Unified)
                                .fields("name", HighlightField.of(_fieldBuilder -> _fieldBuilder.preTags(ElasticsearchConstant.HIGH_LIGHT_PREFIX).postTags(ElasticsearchConstant.HIGH_LIGHT_POSTFIX)))
                                .fields("documentNo", HighlightField.of(_fieldBuilder -> _fieldBuilder.preTags(ElasticsearchConstant.HIGH_LIGHT_PREFIX).postTags(ElasticsearchConstant.HIGH_LIGHT_POSTFIX)))
                                .fields("keywords", HighlightField.of(_fieldBuilder -> _fieldBuilder.preTags(ElasticsearchConstant.HIGH_LIGHT_PREFIX).postTags(ElasticsearchConstant.HIGH_LIGHT_POSTFIX))))
                .build();
        SearchResponse<HashMap> response = null;
        try {
            log.info("ES搜索请求参数：{}", request.toString());
            response = elasticsearchClient.search(request, HashMap.class);
        } catch (ElasticsearchException e) {
            log.error("索引异常", e);
            PamirsSession.getMessageHub()
                    .msg(Message.init()
                            .setLevel(InformationLevelEnum.WARN)
                            .msg("索引异常"));
            return page;
        } catch (IOException e) {
            log.error("ElasticSearch运行状态异常", e);
            PamirsSession.getMessageHub()
                    .msg(Message.init()
                            .setLevel(InformationLevelEnum.WARN)
                            .msg("ElasticSearch运行状态异常"));
            return page;
        }
        if (null == response || response.timedOut()) {
            return page;
        }
        HitsMetadata<HashMap> hits = response.hits();
        if (null == hits) {
            return page;
        }
        TotalHits totalHits = hits.total();
        long total = Optional.ofNullable(totalHits).map(TotalHits::value).orElse(0L);
        List<HashMap> dataMapList = Optional.of(hits)
                .map(HitsMetadata<HashMap>::hits)
                .map(hitsMap ->{
                    hitsMap.stream().forEach(highlightForEach -> {
                        highlightForEach.highlight().forEach((key, value) -> {
                            if(highlightForEach.source().containsKey(key)){
                                highlightForEach.source().put(key,value.get(0));
                            }
                        });
                    });
                    return hitsMap;
                })
                .map(List::stream)
                .orElse(Stream.empty())
                .map(Hit::source)
                .collect(Collectors.toList());
        List<T> context = persistenceDataConverter.out(modelModel, dataMapList);
        page.setSize(size);
        page.setTotalElements(total);
        page.setContent(context);
        log.info("ES搜索请求参数返回total,{}", total);
        return page;
    }

Ⅲ、Basic Configuration

(Ⅰ) Add Relevant Dependencies to the Startup Project

  • The startup project needs to specify the version of the ES client package. Not specifying the version will implicitly depend on the lower version specified by the top-level spring-boot dependency management.
  • The startup project adds project dependencies of pamris-channel and pamirs-sql-record.
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>8.4.1</version>
</dependency>
<dependency>
    <groupId>jakarta.json</groupId>
    <artifactId>jakarta.json-api</artifactId>
    <version>2.1.1</version>
</dependency>

<dependency>
    <groupId>pro.shushi.pamirs.core</groupId>
    <artifactId>pamirs-sql-record-core</artifactId>
</dependency>
<dependency>
    <groupId>pro.shushi.pamirs.core</groupId>
    <artifactId>pamirs-channel-core</artifactId>
</dependency>

(Ⅱ) Add Relevant Dependencies to the API Project

Add the dependency of pamirs-channel-api to XXX-api.

<dependency>
  <groupId>pro.shushi.pamirs.core</groupId>
  <artifactId>pamirs-channel-api</artifactId>
</dependency>

(Ⅲ) YAML File Configuration

Documentation related to this topic can be found in Enhanced Model Configuration and Data Record Configuration.

Add the configuration pamirs.boot.modules in the application.yml file of the startup project to include channel and sql_record, that is, add the channel and sql_record modules to the startup module. At the same time, pay attention to the ES configuration to ensure it matches the ES service.

pamirs:
  record:
    sql:
      #改成自己本地路径(或服务器路径)
      store: /Users/oinone/record
  boot:
    modules:
      - channel
      ## 确保也安装了sql_record
      - sql_record
  elastic:
    url: 127.0.0.1:9200

(Ⅳ) Add Module Dependencies to the Project's Modules

The definition class of xxxModule adds a dependency on ChannelModule.

@Module(dependencies = {ChannelModule.MODULE_MODULE})

Ⅳ、Common Issues

After introducing Oinone's search (i.e., the Channel module), errors may occur due to incorrect configuration, missing configuration, or missing introduction of some Jar packages.

(Ⅰ) Class JCTree Not Found During Startup

1. Specific Phenomenon

An error may occur during startup: java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression

2. Cause of Occurrence

  • After introducing the Channel module, the startup process will scan the Class package to find Enhance annotations. The Pamirs底层 uses classes in jdk's tools, such as com/sun/tools/javac/tree/JCTree$JCExpression.
  • Specific versions of jdk may lack tools.jar, leading to startup failure.

3. Specific Error

at org.springframework.boot.loader.Launcher.launch(Launcher.java:107) [pamirs-venus-boot.jar:na]
    at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [pamirs-venus-boot.jar:na]
    at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [pamirs-venus-boot.jar:na]
Caused by: java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression
    at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) ~[na:1.8.0_381]
    at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908) ~[na:1.8.0_381]
    at pro.shushi.pamirs.boot.common.initial.PamirsBootMainInitial.init(PamirsBootMainInitial.java:66) ~[pamirs-boot-api-4.6.10.jar!/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_381]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_381]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_381]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_381]
    at org.springframework.context.event.ApplicationListenerMethodAdapter.doInvoke(ApplicationListenerMethodAdapter.java:305) ~[spring-context-5.2.12.RELEASE.jar!/:5.2.12.RELEASE]
    ... 20 common frames omitted
Caused by: java.lang.NoClassDefFoundError: com/sun/tools/javac/tree/JCTree$JCExpression
    at java.lang.Class.forName0(Native Method) ~[na:1.8.0_381]
    at java.lang.Class.forName(Class.java:264) ~[na:1.8.0_381]
    at pro.shushi.pamirs.meta.util.ClassUtils.getClasses(ClassUtils.java:157) ~[pamirs-meta-model-4.6.8.jar!/:na]
    at pro.shushi.pamirs.meta.util.ClassUtils.getClassesByPacks(ClassUtils.java:73) ~[pamirs-meta-model-4.6.8.jar!/:na]
    at pro.shushi.pamirs.channel.core.manager.EnhanceModelScanner.enhanceModel(EnhanceModelScanner.java:51) ~[pamirs-channel-core-4.6.15.jar!/:na]
    at pro.shushi.pamirs.channel.core.init.ChannelSystemBootAfterInit.init(ChannelSystemBootAfterInit.java:31)

4. Solution

pamirs:
  channel:
    packages:
      - com.xxx.xxx # Configure if the enhanced model definition class is in a non-pro.shushi.pamirs package

Method 2: Use Oracle Version of JDK

Ensure that the jdk's lib directory and tools.jar have the corresponding classes for com/sun/tools/javac/tree/JCTree.

(Ⅱ) Class JsonProvider Not Found During Startup

1. Specific Error

If the startup error message is as follows:

Caused by: java.lang.NoClassDefFoundError: jakarta/json/spi/JsonProvider
    at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_181]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763) ~[na:1.8.0_181]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_181]
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) ~[na:1.8.0_181]

2. Cause of Occurrence

The project only introduces pamirs-channel-core but does not introduce elasticsearch-related packages.

3. Solution

<dependency>
  <groupId>org.elasticsearch.client</groupId>
  <artifactId>elasticsearch-rest-client</artifactId>
  <version>8.4.1</version>
</dependency>
<dependency>
  <groupId>jakarta.json</groupId>
  <artifactId>jakarta.json-api</artifactId>
  <version>2.1.1</version>
</dependency>
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