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Java-based open source low-code development platform for enterprise
/*
* Copyright (C) 2015 INFORMATION SERVICES INTERNATIONAL - DENTSU, LTD. All Rights Reserved.
*
* Unless you have purchased a commercial license,
* the following license terms apply:
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see refers;
private String userLang;
private String userLangReplace;
QueryLocalizer(EntityHandler eh, EntityContext ec) {
this.eh = eh;
this.ec = ec;
userLang = ExecuteContext.getCurrentContext().getLanguage();
}
@Override
public ASTNode visit(EntityField entityField) {
int unnestCount = entityField.unnestCount();
QueryLocalizer target = this;
for (int i = 0; i < unnestCount; i++) {
target = target.parent;
if (target == null) {
throw new QueryException(entityField + " specify outer query's field, but has no outer query.");
}
}
String propName = entityField.getPropertyName();
if (unnestCount > 0) {
propName = propName.substring(unnestCount);
}
String l10nPropName = null;
int lastDot = propName.lastIndexOf('.');
if (lastDot < 0) {
//直下のプロパティ
PropertyHandler ph = target.eh.getProperty(propName, ec);
if (ph == null) {
throw new QueryException(entityField + " not defined.");
}
if (ph instanceof PrimitivePropertyHandler) {
if (target.eh.getMetaData().getDataLocalizationStrategy() != null
&& target.eh.getMetaData().getDataLocalizationStrategy() instanceof MetaEachPropertyDataLocalizationStrategy) {
l10nPropName = propName + "_" + userLangReplace();
PropertyHandler l10nPh = target.eh.getProperty(l10nPropName, ec);
if (l10nPh == null) {
l10nPropName = null;
}
}
} else {
//Reference
EntityHandler refEh = ((ReferencePropertyHandler) ph).getReferenceEntityHandler(ec);
target.addRefers(propName, refEh);
}
} else {
//参照先のプロパティ
ReferencePropertyHandler ref = (ReferencePropertyHandler) target.eh.getPropertyCascade(propName.substring(0, lastDot), ec);
if (ref == null) {
throw new QueryException(entityField + " not defined.");
}
EntityHandler targetEh = ref.getReferenceEntityHandler(ec);
String propNameDirect = propName.substring(lastDot + 1, propName.length());
PropertyHandler ph = targetEh.getProperty(propNameDirect, ec);
if (ph == null) {
throw new QueryException(entityField + " not defined.");
}
if (ph instanceof PrimitivePropertyHandler) {
if (targetEh.getMetaData().getDataLocalizationStrategy() != null
&& targetEh.getMetaData().getDataLocalizationStrategy() instanceof MetaEachPropertyDataLocalizationStrategy) {
l10nPropName = propName + "_" + userLangReplace();
String l10nPropNameDirect = propNameDirect + "_" + userLangReplace();
PropertyHandler l10nPh = targetEh.getProperty(l10nPropNameDirect, ec);
if (l10nPh == null) {
l10nPropName = null;
}
}
} else {
//Reference
EntityHandler refEh = ((ReferencePropertyHandler) ph).getReferenceEntityHandler(ec);
target.addRefers(propName, refEh);
}
//参照階層のチェック
String refPath = propName;
for (int index = lastDot; index > 0; index = refPath.lastIndexOf('.')) {
refPath = refPath.substring(0, index);
ReferencePropertyHandler refPh = (ReferencePropertyHandler) target.eh.getPropertyCascade(refPath, ec);
EntityHandler refEh = refPh.getReferenceEntityHandler(ec);
target.addRefers(refPath, refEh);
}
}
if (l10nPropName == null) {
return new EntityField(entityField.getPropertyName());
} else {
if (unnestCount > 0) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < unnestCount; i++) {
sb.append('.');
}
sb.append(l10nPropName);
return new EntityField(sb.toString());
} else {
return new EntityField(l10nPropName);
}
}
}
private void addRefers(String refName, EntityHandler refEh) {
if (refEh.getMetaData().getDataLocalizationStrategy() instanceof MetaEachInstanceDataLocalizationStrategy) {
if (refers == null) {
refers = new HashMap<>();
}
if (!refers.containsKey(refName)) {
refers.put(refName, refEh);
}
}
}
private String userLangReplace() {
if (userLangReplace == null) {
userLangReplace = userLang.replace('-', '_');
}
return userLangReplace;
}
@Override
public ASTNode visit(SubQuery subQuery) {
EntityHandler subEh = ec.getHandlerByName(subQuery.getQuery().getFrom().getEntityName());
QueryLocalizer subQueryLocalizer = new QueryLocalizer(subEh, ec);
subQueryLocalizer.parent = this;
Query subQ = (Query) subQuery.getQuery().accept(subQueryLocalizer);
Condition on = null;
if (subQuery.getOn() != null) {
on = (Condition) subQuery.getOn().accept(subQueryLocalizer);
}
return new SubQuery(subQ, on);
}
@Override
public ASTNode visit(Query query) {
Query q = (Query) super.visit(query);
if (eh.getMetaData().getDataLocalizationStrategy() != null &&
eh.getMetaData().getDataLocalizationStrategy() instanceof MetaEachInstanceDataLocalizationStrategy) {
MetaEachInstanceDataLocalizationStrategy st = (MetaEachInstanceDataLocalizationStrategy) eh.getMetaData().getDataLocalizationStrategy();
Condition l10nCond = l10nCond(userLang, st, null);
if (q.getWhere() == null) {
q.where(l10nCond);
} else {
q.where(new And(q.getWhere().getCondition(), l10nCond));
}
}
//参照
if (q.getRefer() != null && q.getRefer().size() > 0) {
for (Refer r: q.getRefer()) {
EntityHandler refEh = (refers == null) ? null: refers.remove(r.getReferenceName().getPropertyName());
if (refEh != null) {
MetaEachInstanceDataLocalizationStrategy st = (MetaEachInstanceDataLocalizationStrategy) refEh.getMetaData().getDataLocalizationStrategy();
Condition l10nCond = l10nCond(userLang, st, r.getReferenceName().getPropertyName());
if (r.getCondition() == null) {
r.setCondition(l10nCond);
} else {
r.setCondition(new And(r.getCondition(), l10nCond));
}
}
}
}
if (refers != null && refers.size() > 0) {
if (q.getRefer() == null) {
q.setRefer(new ArrayList<>());
}
for (Map.Entry e: refers.entrySet()) {
MetaEachInstanceDataLocalizationStrategy st = (MetaEachInstanceDataLocalizationStrategy) e.getValue().getMetaData().getDataLocalizationStrategy();
Condition l10nCond = l10nCond(userLang, st, e.getKey());
q.getRefer().add(new Refer(new EntityField(e.getKey()), l10nCond));
}
}
return q;
}
private Condition l10nCond(String userLang, MetaEachInstanceDataLocalizationStrategy st, String refPath) {
Condition l10nCond = null;
if (st.getLanguages() != null &&
st.getLanguages().contains(userLang)) {
if (refPath == null) {
l10nCond = new Equals(st.getLanguagePropertyName(), userLang);
} else {
l10nCond = new Equals(refPath + "." + st.getLanguagePropertyName(), userLang);
}
} else {
if (refPath == null) {
l10nCond = new IsNull(st.getLanguagePropertyName());
} else {
l10nCond = new IsNull(refPath + "." + st.getLanguagePropertyName());
}
}
return l10nCond;
}
}