feat(core): Introduce interface for frequently used index settings

- Add PagingSettingsProvider
- Implement interface in IndexConfiguration
- Implement as delegate in RepositoryConfiguration and ServiceProvider

core/com.b2international.snowowl.core/src/com/b2international/snowowl/core/ServiceProvider.java

@@ -25,8 +25,10 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.b2international.snowowl.core.config.RepositoryConfiguration;
 import com.b2international.snowowl.core.config.SnowOwlConfiguration;
 import com.b2international.snowowl.core.domain.DelegatingContext;
+import com.b2international.snowowl.core.domain.PagingSettingsProvider;
 import com.b2international.snowowl.core.events.Request;
 import com.b2international.snowowl.core.jobs.JobRequests;
 import com.b2international.snowowl.core.jobs.RemoteJob;
@@ -37,7 +39,7 @@
 /**
  * @since 4.5
  */
-public interface ServiceProvider {
+public interface ServiceProvider extends PagingSettingsProvider {
 
  /**
  * @return the application-level configuration object.
@@ -139,7 +141,26 @@ default boolean isJobRunning(String jobKey, Predicate<Map<String, Object>> param
  .filter(parametersPredicate)
  .isPresent();
  }
+
+ private PagingSettingsProvider pagingSettings() {
+ return service(RepositoryConfiguration.class);
+ }
 
+ @Override
+ default int getPageSize() {
+ return pagingSettings().getPageSize();
+ }
+
+ @Override
+ default int getTermPartitionSize() {
+ return pagingSettings().getTermPartitionSize();
+ }
+
+ @Override
+ default int getCommitLimit() {
+ return pagingSettings().getCommitLimit();
+ }
+
  /**
  * Empty {@link ServiceProvider} implementation that throws {@link UnsupportedOperationException}s when trying to provide services. Useful when
  * testing {@link Request} implementations.
@@ -157,5 +178,4 @@ public <T> Provider<T> provider(Class<T> type) {
  throw new UnsupportedOperationException("Empty service provider can't provide services. Requested: " + type);
  }
  };
-
 }

core/com.b2international.snowowl.core/src/com/b2international/snowowl/core/config/IndexConfiguration.java

@@ -24,6 +24,7 @@
 import org.hibernate.validator.constraints.NotEmpty;
 
 import com.b2international.index.IndexClientFactory;
+import com.b2international.snowowl.core.domain.PagingSettingsProvider;
 import com.fasterxml.jackson.annotation.JsonAnyGetter;
 import com.fasterxml.jackson.annotation.JsonAnySetter;
 import com.fasterxml.jackson.annotation.JsonIgnore;
@@ -35,7 +36,7 @@
 /**
  * @since 5.0
  */
-public class IndexConfiguration {
+public class IndexConfiguration implements PagingSettingsProvider {
 
  public static final int DEFAULT_CLUSTER_HEALTH_TIMEOUT = 300_000; // Snow Owl defaults to 5m cluster health timeout
  public static final int DEFAULT_RESULT_WINDOW = 100_099; // Snow Owl defaults to slightly more than 100k max result window
@@ -294,16 +295,19 @@ public void configure(Builder<String, Object> settings) {
  }
 
  @JsonIgnore
+ @Override
  public int getPageSize() {
  return Math.min(IndexClientFactory.MAX_PAGE_SIZE, getResultWindow());
  }
 
  @JsonIgnore
+ @Override
  public int getTermPartitionSize() {
  return Math.min(getMaxTermsCount(), getResultWindow());
  }
 
  @JsonIgnore
+ @Override
  public int getCommitLimit() {
  return Math.min(getCommitWatermarkLow(), getResultWindow());
  }

core/com.b2international.snowowl.core/src/com/b2international/snowowl/core/config/RepositoryConfiguration.java

@@ -22,6 +22,8 @@
 
 import org.hibernate.validator.constraints.NotEmpty;
 
+import com.b2international.snowowl.core.domain.PagingSettingsProvider;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.google.common.net.HostAndPort;
 
@@ -31,7 +33,7 @@
  * 
  * @since 3.4
  */
-public class RepositoryConfiguration {
+public class RepositoryConfiguration implements PagingSettingsProvider {
 
  @NotEmpty
  private String host = "0.0.0.0";
@@ -170,4 +172,22 @@ public String getDeploymentId() {
  public void setDeploymentId(String deploymentId) {
  this.deploymentId = deploymentId;
  }
+
+ @JsonIgnore
+ @Override
+ public int getPageSize() {
+ return indexConfiguration.getPageSize();
+ }
+
+ @JsonIgnore
+ @Override
+ public int getTermPartitionSize() {
+ return indexConfiguration.getTermPartitionSize();
+ }
+
+ @JsonIgnore
+ @Override
+ public int getCommitLimit() {
+ return indexConfiguration.getCommitLimit();
+ }
 }

core/com.b2international.snowowl.core/src/com/b2international/snowowl/core/domain/PagingSettingsProvider.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2023 B2i Healthcare Pte Ltd, http:https://b2i.sg
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http:https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.b2international.snowowl.core.domain;
+
+/**
+ * @since 9.0
+ */
+public interface PagingSettingsProvider {
+
+ /**
+ * @return the recommended page/batch size for streaming queries
+ */
+ public int getPageSize();
+
+ /**
+ * @return the recommended (maximum) number of terms that should appear in a single "terms" query
+ */
+ public int getTermPartitionSize();
+
+ /**
+ * @return the recommended number of changes in a single commit (soft limit)
+ */
+ public int getCommitLimit();
+}