| /******************************************************************************* |
| * 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.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.oro.text.perl.Perl5Util; |
| import org.apache.oro.text.regex.MalformedPatternException; |
| import org.apache.oro.text.regex.Pattern; |
| import org.apache.oro.text.regex.PatternMatcher; |
| import org.apache.oro.text.regex.Perl5Matcher; |
| import org.ofbiz.base.util.Debug; |
| import org.ofbiz.base.util.PatternFactory; |
| import org.ofbiz.base.util.UtilGenerics; |
| import org.ofbiz.base.util.UtilValidate; |
| import org.ofbiz.entity.Delegator; |
| import org.ofbiz.entity.GenericModelException; |
| import org.ofbiz.entity.config.model.Datasource; |
| import org.ofbiz.entity.model.ModelEntity; |
| import org.ofbiz.entity.model.ModelField; |
| |
| /** |
| * Base class for comparisons. |
| */ |
| @SuppressWarnings("serial") |
| public abstract class EntityComparisonOperator<L, R> extends EntityOperator<L, R, Boolean> { |
| |
| public static final String module = EntityComparisonOperator.class.getName(); |
| |
| public static Pattern makeOroPattern(String sqlLike) { |
| Perl5Util perl5Util = new Perl5Util(); |
| try { |
| sqlLike = perl5Util.substitute("s/([$^.+*?])/\\\\$1/g", sqlLike); |
| sqlLike = perl5Util.substitute("s/%/.*/g", sqlLike); |
| sqlLike = perl5Util.substitute("s/_/./g", sqlLike); |
| } catch (Throwable t) { |
| String errMsg = "Error in ORO pattern substitution for SQL like clause [" + sqlLike + "]: " + t.toString(); |
| Debug.logError(t, errMsg, module); |
| throw new IllegalArgumentException(errMsg); |
| } |
| try { |
| return PatternFactory.createOrGetPerl5CompiledPattern(sqlLike, true); |
| } catch (MalformedPatternException e) { |
| Debug.logError(e, module); |
| } |
| return null; |
| } |
| |
| @Override |
| public void validateSql(ModelEntity entity, L lhs, R rhs) throws GenericModelException { |
| if (lhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) lhs; |
| ecv.validateSql(entity); |
| } |
| if (rhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) rhs; |
| ecv.validateSql(entity); |
| } |
| } |
| |
| @Override |
| public void visit(EntityConditionVisitor visitor, L lhs, R rhs) { |
| visitor.accept(lhs); |
| visitor.accept(rhs); |
| } |
| |
| @Override |
| public void addSqlValue(StringBuilder sql, ModelEntity entity, List<EntityConditionParam> entityConditionParams, boolean compat, L lhs, R rhs, Datasource datasourceInfo) { |
| //Debug.logInfo("EntityComparisonOperator.addSqlValue field=" + lhs + ", value=" + rhs + ", value type=" + (rhs == null ? "null object" : rhs.getClass().getName()), module); |
| |
| // if this is an IN operator and the rhs Object isEmpty, add "1=0" instead of the normal SQL. Note that "FALSE" does not work with all databases. |
| if (this.idInt == EntityOperator.ID_IN && UtilValidate.isEmpty(rhs)) { |
| sql.append("1=0"); |
| return; |
| } |
| |
| ModelField field; |
| if (lhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) lhs; |
| ecv.addSqlValue(sql, entity, entityConditionParams, false, datasourceInfo); |
| field = ecv.getModelField(entity); |
| } else if (compat && lhs instanceof String) { |
| field = getField(entity, (String) lhs); |
| if (field == null) { |
| sql.append(lhs); |
| } else { |
| sql.append(field.getColName()); |
| } |
| } else { |
| addValue(sql, null, lhs, entityConditionParams); |
| field = null; |
| } |
| |
| makeRHSWhereString(entity, entityConditionParams, sql, field, rhs, datasourceInfo); |
| } |
| |
| @Override |
| public boolean isEmpty(L lhs, R rhs) { |
| return false; |
| } |
| |
| protected void makeRHSWhereString(ModelEntity entity, List<EntityConditionParam> entityConditionParams, StringBuilder sql, ModelField field, R rhs, Datasource datasourceInfo) { |
| sql.append(' ').append(getCode()).append(' '); |
| makeRHSWhereStringValue(entity, entityConditionParams, sql, field, rhs, datasourceInfo); |
| } |
| |
| protected void makeRHSWhereStringValue(ModelEntity entity, List<EntityConditionParam> entityConditionParams, StringBuilder sql, ModelField field, R rhs, Datasource datasourceInfo) { |
| if (rhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) rhs; |
| if (ecv.getModelField(entity) == null) { |
| ecv.setModelField(field); |
| } |
| ecv.addSqlValue(sql, entity, entityConditionParams, false, datasourceInfo); |
| } else { |
| addValue(sql, field, rhs, entityConditionParams); |
| } |
| } |
| |
| public abstract boolean compare(L lhs, R rhs); |
| |
| public Boolean eval(Delegator delegator, Map<String, ? extends Object> map, L lhs, R rhs) { |
| return Boolean.valueOf(mapMatches(delegator, map, lhs, rhs)); |
| } |
| |
| @Override |
| public boolean mapMatches(Delegator delegator, Map<String, ? extends Object> map, L lhs, R rhs) { |
| Object leftValue; |
| if (lhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) lhs; |
| leftValue = ecv.getValue(delegator, map); |
| } else if (lhs instanceof String) { |
| leftValue = map.get(lhs); |
| } else { |
| leftValue = lhs; |
| } |
| Object rightValue; |
| if (rhs instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) rhs; |
| rightValue = ecv.getValue(delegator, map); |
| } else { |
| rightValue = rhs; |
| } |
| |
| if (leftValue == WILDCARD || rightValue == WILDCARD) return true; |
| return compare(UtilGenerics.<L>cast(leftValue), UtilGenerics.<R>cast(rightValue)); |
| } |
| |
| @Override |
| public EntityCondition freeze(L lhs, R rhs) { |
| return EntityCondition.makeCondition(freeze(lhs), this, freeze(rhs)); |
| } |
| |
| protected Object freeze(Object item) { |
| if (item instanceof EntityConditionValue) { |
| EntityConditionValue ecv = (EntityConditionValue) item; |
| return ecv.freeze(); |
| } else { |
| return item; |
| } |
| } |
| |
| public EntityComparisonOperator(int id, String code) { |
| super(id, code); |
| } |
| |
| public static final <T> boolean compareEqual(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (!lhs.equals(rhs)) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <T> boolean compareNotEqual(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs == null) { |
| return false; |
| } |
| } else if (lhs.equals(rhs)) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <T> boolean compareGreaterThan(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (lhs.compareTo(rhs) <= 0) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <T> boolean compareGreaterThanEqualTo(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (lhs.compareTo(rhs) < 0) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <T> boolean compareLessThan(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (lhs.compareTo(rhs) >= 0) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <T> boolean compareLessThanEqualTo(Comparable<T> lhs, T rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (lhs.compareTo(rhs) > 0) { |
| return false; |
| } |
| return true; |
| } |
| |
| public static final <L,R> boolean compareIn(L lhs, R rhs) { |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } else { |
| return true; |
| } |
| } else if (rhs instanceof Collection<?>) { |
| if (((Collection<?>) rhs).contains(lhs)) { |
| return true; |
| } else { |
| return false; |
| } |
| } else if (lhs.equals(rhs)) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| public static final <L,R> boolean compareLike(L lhs, R rhs) { |
| PatternMatcher matcher = new Perl5Matcher(); |
| if (lhs == null) { |
| if (rhs != null) { |
| return false; |
| } |
| } else if (lhs instanceof String && rhs instanceof String) { |
| //see if the lhs value is like the rhs value, rhs will have the pattern characters in it... |
| return matcher.matches((String) lhs, makeOroPattern((String) rhs)); |
| } |
| return true; |
| } |
| } |