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Copyright (c) 2011 Soichiro Kashima Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the S...
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/* * Copyright (c) 2011 Soichiro Kashima//from w ww.j av a 2 s . co m * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package android.fastroid.entity; import android.app.Activity; import android.content.Context; import android.fastroid.form.validator.Validator; import android.fastroid.util.FormUtil; import android.fastroid.util.MessageUtil; import android.os.Parcel; import android.util.Log; import android.view.View; import android.widget.Toast; import java.lang.reflect.Field; import java.lang.reflect.Modifier; import java.util.ArrayList; import java.util.Arrays; /** * Utilities for the entities. * * @author Soichiro Kashima * @since 2011/05/05 */ public final class EntityUtil { /** * Creates the utility.<br> * This is hidden from outside the class because this is the utility class. */ private EntityUtil() { } /** * Gets the input values from the form class in the specified activity, * validates the values, and returns the entity. If the input values have * errors, this methos shows the error message as {@link Toast}, and returns * {@code null}. * * @param activity target activity * @param formClass the form class related to the activity * @param entityClass the entity class corresponding to the form * @return validated entity */ public static Object create(final Activity activity, final Class<?> formClass, final Class<?> entityClass) { return create(activity, activity.findViewById(android.R.id.content), formClass, entityClass); } /** * Gets the input values from the form class in the specified activity, * validates the values, and returns the entity. If the input values have * errors, this methos shows the error message as {@link Toast}, and returns * {@code null}. * * @param context target context * @param rootView root view of the form * @param formClass the form class related to the activity * @param entityClass the entity class corresponding to the form * @return validated entity */ public static Object create(final Context context, final View rootView, final Class<?> formClass, final Class<?> entityClass) { // Gets the input value from the form Object form = FormUtil.create(context, rootView, formClass); // Validation ArrayList<String> errorMessages = Validator.validate(context, form); if (errorMessages.size() > 0) { // Error Toast.makeText( context, MessageUtil.serialize(errorMessages), Toast.LENGTH_SHORT).show(); return null; } // Copies to the entity return copy(form, entityClass); } /** * Sets the public field's value of the target object from the * {@link Parcel} order by the field name(asc). * * @param target target object * @param in {@link Parcel} to read */ public static void readFieldsByNameOrder(final Object target, final Parcel in) { Field[] fields = target.getClass().getFields(); Arrays.sort(fields, new FieldNameComparator()); try { for (Field field : fields) { Class<?> type = field.getType(); // Skipps the final fields if (Modifier.isFinal(field.getModifiers())) { continue; } if (type.equals(byte.class)) { field.setByte(target, in.readByte()); } else if (type.equals(double.class)) { field.setDouble(target, in.readDouble()); } else if (type.equals(float.class)) { field.setFloat(target, in.readFloat()); } else if (type.equals(int.class)) { field.setInt(target, in.readInt()); } else if (type.equals(long.class)) { field.setLong(target, in.readLong()); } else if (type.equals(String.class)) { field.set(target, in.readString()); } } } catch (Exception e) { throw new RuntimeException(e); } } /** * Writes the public field valeus to the {@link Parcel} order by the field * names(asc). * * @param target target object * @param out output {@link Parcel} */ public static void writeFieldsByNameOrder(final Object target, final Parcel out) { Field[] fields = target.getClass().getFields(); Arrays.sort(fields, new FieldNameComparator()); try { for (Field field : fields) { Class<?> type = field.getType(); // Skipps the final fields if (Modifier.isFinal(field.getModifiers())) { continue; } if (type.equals(byte.class)) { out.writeByte(field.getByte(target)); } else if (type.equals(double.class)) { out.writeDouble(field.getDouble(target)); } else if (type.equals(float.class)) { out.writeFloat(field.getFloat(target)); } else if (type.equals(int.class)) { out.writeInt(field.getInt(target)); } else if (type.equals(long.class)) { out.writeLong(field.getLong(target)); } else if (type.equals(String.class)) { out.writeString((String) field.get(target)); } } } catch (Exception e) { throw new RuntimeException(e); } } /** * Copies an object fields which have same names to the other object.<br> * * @param src source object * @param dstClass destination object's class * @return copied object */ public static Object copy(final Object src, final Class<?> dstClass) { Field[] srcFields = src.getClass().getFields(); Object dst = null; try { dst = dstClass.newInstance(); for (Field srcField : srcFields) { try { Object value = srcField.get(src); if (value == null) { continue; } String name = srcField.getName(); Class<?> srcType = srcField.getType(); Field dstField = dstClass.getField(name); Class<?> dstType = dstField.getType(); if (srcType.equals(String.class)) { String valueString = (String) value; if (dstType.equals(int.class)) { dstField.setInt(dst, Integer.parseInt(valueString)); } else { // TODO Needs deep copy dstField.set(dst, value); } } else { // TODO Needs deep copy dstField.set(dst, value); } } catch (Exception e) { Log.v("fastroid", "Failed to set field value: " + srcField.getName() + ": " + e.getMessage()); } } } catch (Exception e) { Log.v("fastroid", e.getMessage()); } return dst; } }