97 lines
3.7 KiB
Java
97 lines
3.7 KiB
Java
package org.warp.jcwdb.ann;
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import java.io.IOException;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.util.LinkedHashMap;
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import java.util.Map;
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public class DataInitializer {
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private final DataLoader dataLoader;
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public DataInitializer(DataLoader dataLoader) {
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this.dataLoader = dataLoader;
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}
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public void initializeDBObject(DBObject obj) throws IOException {
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initializeDBObjectFields(obj);
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initializeDBObjectProperties(obj);
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obj.initialize();
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}
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private void initializeDBObjectFields(DBObject obj) throws IOException {
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// Declare the variables needed to get the biggest field Id
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Field[] unorderedFields = dataLoader.getFields(obj);
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// Find the biggest field Id
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int biggestFieldId = dataLoader.getBiggestFieldId(unorderedFields);
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// Allocate new UIDs
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long[] fieldUIDs = dataLoader.allocateNewUIDs(biggestFieldId + 1);
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// Declare the other variables
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Field[] fields = new Field[biggestFieldId + 1];
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DBDataType[] orderedFieldTypes = new DBDataType[biggestFieldId + 1];
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// Load all fields metadata and load them
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for (Field field : unorderedFields) {
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DBField fieldAnnotation = field.getAnnotation(DBField.class);
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int fieldId = fieldAnnotation.id();
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DBDataType fieldType = fieldAnnotation.type();
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dataLoader.loadField(obj, field, fieldType, fieldUIDs[fieldId]);
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fields[fieldId] = field;
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orderedFieldTypes[fieldId] = fieldType;
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}
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// Set fields metadata
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obj.setFields(fields, orderedFieldTypes, fieldUIDs);
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}
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private void initializeDBObjectProperties(DBObject obj) {
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// Declare the variables needed to get the biggest property Id
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Method[] unorderedPropertyGetters = obj.getPropertyGetters();
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Method[] unorderedPropertySetters = obj.getPropertySetters();
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// Find the biggest property Id
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int biggestGetter = dataLoader.getBiggestPropertyGetterId(unorderedPropertyGetters);
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int biggestSetter = dataLoader.getBiggestPropertySetterId(unorderedPropertySetters);
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int biggestPropertyId = biggestGetter > biggestSetter ? biggestGetter : biggestSetter;
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// Allocate new UIDs
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long[] propertyUIDs = dataLoader.allocateNewUIDs(biggestPropertyId + 1);
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for (Method property : unorderedPropertySetters) {
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DBPropertySetter fieldAnnotation = property.getAnnotation(DBPropertySetter.class);
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int propertyId = fieldAnnotation.id();
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if (propertyId > biggestPropertyId) {
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biggestPropertyId = propertyId;
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}
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}
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// Declare the other variables
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DBDataType[] propertyTypes = new DBDataType[biggestPropertyId + 1];
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Method[] propertyGetters = new Method[biggestPropertyId + 1];
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Method[] propertySetters = new Method[biggestPropertyId + 1];
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Map<String, DBPropertySetter> setterMethods = new LinkedHashMap<>();
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Map<String, DBPropertyGetter> getterMethods = new LinkedHashMap<>();
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// Load the properties metadata
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for (Method property : unorderedPropertyGetters) {
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DBPropertyGetter propertyAnnotation = property.getAnnotation(DBPropertyGetter.class);
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int propertyId = propertyAnnotation.id();
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DBDataType propertyType = propertyAnnotation.type();
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propertyTypes[propertyId] = propertyType;
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propertyGetters[propertyId] = property;
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getterMethods.put(property.getName(), propertyAnnotation);
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}
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for (Method property : unorderedPropertySetters) {
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DBPropertySetter propertyAnnotation = property.getAnnotation(DBPropertySetter.class);
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int propertyId = propertyAnnotation.id();
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DBDataType propertyType = propertyAnnotation.type();
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propertyTypes[propertyId] = propertyType;
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propertySetters[propertyId] = property;
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setterMethods.put(property.getName(), propertyAnnotation);
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}
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// Set properties metadata
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obj.setProperties(propertyGetters, propertySetters, propertyTypes, propertyUIDs, setterMethods, getterMethods);
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}
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}
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