#919 - io.ebean package initial

2024-04-21 10:51:47 +00:00 · 2016-12-11 23:23:22 +13:00
parent 5821dc96b9
commit 971e2dc91b
2134 changed files with 10721 additions and 8652 deletions
@@ -0,0 +1,89 @@
+package io.ebeaninternal.server.deploy;
+
+import io.ebean.bean.BeanCollection;
+import io.ebean.bean.BeanCollectionAdd;
+import io.ebean.bean.EntityBean;
+import io.ebeaninternal.server.text.json.ReadJson;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonToken;
+
+import java.io.IOException;
+
+/**
+ * Help BeanPropertyAssocMany with JSON processing.
+ */
+public class BeanPropertyAssocManyJsonHelp {
+
+  /**
+   * The associated many property.
+   */
+  private final BeanPropertyAssocMany<?> many;
+
+  /**
+   * Helper used to read json for transient 'many' properties.
+   */
+  private final BeanPropertyAssocManyJsonTransient jsonTransient;
+
+  /**
+   * Construct for the owning many property.
+   */
+  public BeanPropertyAssocManyJsonHelp(BeanPropertyAssocMany<?> many) {
+    this.many = many;
+    boolean objectMapperPresent = many.getBeanDescriptor().getServerConfig().getClassLoadConfig().isJacksonObjectMapperPresent();
+    this.jsonTransient = !objectMapperPresent ? null : new BeanPropertyAssocManyJsonTransient();
+  }
+
+  /**
+   * Read the JSON for this property.
+   */
+  public void jsonRead(ReadJson readJson, EntityBean parentBean) throws IOException {
+
+    if (!this.many.jsonDeserialize) {
+      return;
+    }
+
+    JsonParser parser = readJson.getParser();
+    JsonToken event = parser.nextToken();
+    if (JsonToken.VALUE_NULL == event) {
+      return;
+    }
+    if (JsonToken.START_ARRAY != event) {
+      throw new JsonParseException("Unexpected token " + event + " - expecting start_array ", parser.getCurrentLocation());
+    }
+
+    if (many.isTransient()) {
+      jsonReadTransientUsingObjectMapper(readJson, parentBean);
+      return;
+    }
+
+    BeanCollection<?> collection = many.createEmpty(parentBean);
+    BeanCollectionAdd add = many.getBeanCollectionAdd(collection, null);
+    do {
+      EntityBean detailBean = (EntityBean) many.targetDescriptor.jsonRead(readJson, many.name);
+      if (detailBean == null) {
+        // read the entire array
+        break;
+      }
+      add.addEntityBean(detailBean);
+
+      if (parentBean != null && many.childMasterProperty != null) {
+        // bind detail bean back to master via mappedBy property
+        many.childMasterProperty.setValue(detailBean, parentBean);
+      }
+    } while (true);
+
+    many.setValue(parentBean, collection);
+  }
+
+  /**
+   * Read a Transient property using Jackson ObjectMapper.
+   */
+  private void jsonReadTransientUsingObjectMapper(ReadJson readJson, EntityBean parentBean) throws IOException {
+
+    if (jsonTransient == null) {
+      throw new IllegalStateException("Jackson ObjectMapper is required to read this Transient property "+many.getFullBeanName());
+    }
+    jsonTransient.jsonReadUsingObjectMapper(many, readJson, parentBean);
+  }
+}