| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| *******************************************************************************/ |
| package org.ofbiz.entity.condition; |
| |
| import java.io.Serializable; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.ofbiz.entity.config.model.Datasource; |
| import org.ofbiz.entity.jdbc.SqlJdbcUtil; |
| import org.ofbiz.entity.model.ModelEntity; |
| import org.ofbiz.entity.model.ModelField; |
| import org.ofbiz.entity.model.ModelViewEntity; |
| import org.ofbiz.entity.model.ModelViewEntity.ModelAlias; |
| |
| /** |
| * Represents the conditions to be used to constrain a query |
| * <br/>An EntityCondition can represent various type of constraints, including: |
| * <ul> |
| * <li>EntityConditionList: a list of EntityConditions, combined with the operator specified |
| * <li>EntityExpr: for simple expressions or expressions that combine EntityConditions |
| * <li>EntityFieldMap: a map of fields where the field (key) equals the value, combined with the operator specified |
| * </ul> |
| * These can be used in various combinations using the EntityConditionList and EntityExpr objects. |
| * |
| */ |
| @SuppressWarnings("serial") |
| public abstract class EntityConditionBase implements Serializable { |
| |
| public static final List<?> emptyList = Collections.emptyList(); |
| public static final Map<?,?> _emptyMap = Collections.emptyMap(); |
| public static final Map<String, String> emptyAliases = Collections.unmodifiableMap(new HashMap<String, String>()); |
| |
| protected ModelField getField(ModelEntity modelEntity, String fieldName) { |
| ModelField modelField = null; |
| if (modelEntity != null) { |
| modelField = modelEntity.getField(fieldName); |
| } |
| return modelField; |
| } |
| |
| protected String getColName(Map<String, String> tableAliases, ModelEntity modelEntity, String fieldName, boolean includeTableNamePrefix, Datasource datasourceInfo) { |
| if (modelEntity == null) return fieldName; |
| return getColName(tableAliases, modelEntity, getField(modelEntity, fieldName), fieldName, includeTableNamePrefix, datasourceInfo); |
| } |
| |
| protected String getColName(ModelField modelField, String fieldName) { |
| String colName = null; |
| if (modelField != null) { |
| colName = modelField.getColValue(); |
| } else { |
| colName = fieldName; |
| } |
| return colName; |
| } |
| |
| protected String getColName(Map<String, String> tableAliases, ModelEntity modelEntity, ModelField modelField, String fieldName, boolean includeTableNamePrefix, Datasource datasourceInfo) { |
| if (modelEntity == null || modelField == null) return fieldName; |
| |
| // if this is a view entity and we are configured to alias the views, use the alias here instead of the composite (ie table.column) field name |
| if (datasourceInfo != null && datasourceInfo.getAliasViewColumns() && modelEntity instanceof ModelViewEntity) { |
| ModelViewEntity modelViewEntity = (ModelViewEntity) modelEntity; |
| ModelAlias modelAlias = modelViewEntity.getAlias(fieldName); |
| if (modelAlias != null) { |
| return modelAlias.getColAlias(); |
| } |
| } |
| |
| String colName = getColName(modelField, fieldName); |
| if (includeTableNamePrefix && datasourceInfo != null) { |
| String tableName = modelEntity.getTableName(datasourceInfo); |
| if (tableAliases.containsKey(tableName)) { |
| tableName = tableAliases.get(tableName); |
| } |
| colName = tableName + "." + colName; |
| } |
| return colName; |
| } |
| |
| protected void addValue(StringBuilder buffer, ModelField field, Object value, List<EntityConditionParam> params) { |
| SqlJdbcUtil.addValue(buffer, params == null ? null : field, value, params); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| throw new UnsupportedOperationException("equals:" + getClass().getName()); |
| } |
| |
| @Override |
| public int hashCode() { |
| throw new UnsupportedOperationException("hashCode: " + getClass().getName()); |
| } |
| |
| protected static boolean equals(Object o1, Object o2) { |
| return o1 == null ? o2 == null : o1.equals(o2); |
| } |
| |
| protected static int hashCode(Object o) { |
| return o != null ? o.hashCode() : 0; |
| } |
| |
| public static Boolean castBoolean(boolean result) { |
| return result ? Boolean.TRUE : Boolean.FALSE; |
| } |
| } |