+ * The object will be saved to a table with the same name as the object, + * The fields of object will be mapped to the table fields. + * + * @param object the object to be saved + */ public void save(Object object) { + String query = null; + + if (isObjectNew(object)) { + //if this is a new object assign a new id first + generateId(object); + query = generator.generateInsertQuery(object); + } else { + query = generator.generateUpdateQuery(object); + } + + //execute the insert/update query + SqlParameterSource parameterSource = new BeanPropertySqlParameterSource(object); + template.update(query, parameterSource); } - public void delete(int no, Class objectClass) { + public void delete(int id, Class objectClass) { } - //SETTERS------------------------------------------------------------------- + //-------------------------------------------------------------------------- + //PRIVATE METHODS + //return true if the object id is zero or null false otherwise + private boolean isObjectNew(Object object) throws VenException { + BeanWrapper beanWrapper = new BeanWrapperImpl(object); + Object objectId = beanWrapper.getPropertyValue("id"); + if (objectId == null) return true; + if (!(objectId instanceof Integer)) throw new VenException(VenException.EC_GENERATOR_OBJECT_ID_TYPE_INVALID); + return ((Integer)objectId).intValue() == 0; + } + + //set new object id + private void generateId(Object object) { + Integer newObjectId = new Integer(template.queryForInt(generator.generateSequenceQuery(object), new HashMap())); + BeanWrapper beanWrapper = new BeanWrapperImpl(object); + beanWrapper.setPropertyValue("id", newObjectId); + } + + //-------------------------------------------------------------------------- + //SETTERS public void setDataSource(DataSource dataSource) { if (dataSource == null) throw new RuntimeException("fmgVen - DataSource cannot be null"); Index: trunk/fmgVen/src/com/fmguler/ven/VenException.java =================================================================== --- trunk/fmgVen/src/com/fmguler/ven/VenException.java (revision 26) +++ trunk/fmgVen/src/com/fmguler/ven/VenException.java (revision 26) @@ -0,0 +1,74 @@ +/* + * fmgVen - A Convention over Configuration Java ORM Tool + * Copyright 2010 Fatih Mehmet Güler + * + * 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://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. + * under the License. + */ +package com.fmguler.ven; + +/** + * All kinds of exceptions in Ven operations. + * @author Fatih Mehmet Güler + */ +public class VenException extends RuntimeException { + private String errorCode; + private String errorParam; + //Error codes + //"Invalid object, \"id\" property must be of integer type" + public static final String EC_GENERATOR_OBJECT_ID_TYPE_INVALID = "ec-generator-object-id-type-invalid"; + + /** + * Init VenException with an error code + * @param errorCode the error code + */ + public VenException(String errorCode) { + this.errorCode = errorCode; + } + + /** + * Init VenException with an error code and an error parameter + * @param errorCode the error code + * @param errorParam the error param + */ + public VenException(String errorCode, String errorParam) { + this.errorCode = errorCode; + this.errorParam = errorParam; + } + + /** + * Init VenException with an error code, error parameter and the cause of the exception + * @param errorCode the error code + * @param errorParam the error parameter + * @param cause the cause of the exception + */ + public VenException(String errorCode, String errorParam, Throwable cause) { + super(cause); + this.errorCode = errorCode; + this.errorParam = errorParam; + } + + /** + * @return the error code of the exception + */ + public String getErrorCode() { + return errorCode; + } + + /** + * @return the error parameter of the exception, which can contain details about the error + */ + public String getErrorParam() { + return errorParam; + } +} Index: trunk/fmgVen/src/com/fmguler/ven/util/Convert.java =================================================================== --- trunk/fmgVen/src/com/fmguler/ven/util/Convert.java (revision 26) +++ trunk/fmgVen/src/com/fmguler/ven/util/Convert.java (revision 26) @@ -0,0 +1,61 @@ +/* + * fmgVen - A Convention over Configuration Java ORM Tool + * Copyright 2010 Fatih Mehmet Güler + * + * 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://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. + * under the License. + */ +package com.fmguler.ven.util; + +import java.util.Locale; + +/** + * Utility class for conversions from database naming convention to java, and vice versa + * @author Fatih Mehmet Güler + */ +public class Convert { + /** + * Convert from java camelCase case to database naming convention + *
+ * For example, if the name of the given name is SomeDomainObject + * it will be converted to some_domain_object + * + * @param camelCase the camelCase case name + * @return database style name + */ + public static String toDB(String camelCase) { + if (camelCase.equals("")) return ""; + StringBuffer result = new StringBuffer(); + result.append(camelCase.substring(0, 1).toLowerCase(Locale.ENGLISH)); + for (int i = 1; i < camelCase.length(); i++) { + String sCamel = camelCase.substring(i, i + 1); + String sLower = sCamel.toLowerCase(Locale.ENGLISH); + if (!sCamel.equals(sLower)) { + result.append("_").append(sLower); + } else result.append(sCamel); + } + return result.toString(); + } + + /** + * Convert the full package name to simple name. + * For Java 1.4 compatibility of Class.getSimpleName() + * @param fullName Class.getName() + * @return the part after the last . + */ + public static String toSimpleName(String fullName) { + int i = fullName.lastIndexOf("."); + if (i < 0) return fullName; + return fullName.substring(i + 1); + } +}