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145 lines (119 loc) · 4.75 KB
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package org.javawebstack.orm.query;
import org.javawebstack.orm.Model;
import org.javawebstack.orm.TableInfo;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Consumer;
public class QueryGroup<T extends Model> implements QueryElement {
private final List<QueryElement> queryElements = new ArrayList<>();
public QueryGroup(QueryElement... queryElements){
this.queryElements.addAll(Arrays.asList(queryElements));
}
public List<QueryElement> getQueryElements() {
return queryElements;
}
public QueryGroup<T> and(Consumer<QueryGroup<T>> group){
QueryGroup<T> innerGroup = new QueryGroup<>();
group.accept(innerGroup);
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.AND);
queryElements.add(innerGroup);
return this;
}
public QueryGroup<T> or(Consumer<QueryGroup<T>> group){
QueryGroup<T> innerGroup = new QueryGroup<>();
group.accept(innerGroup);
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.OR);
queryElements.add(innerGroup);
return this;
}
public QueryGroup<T> where(Object left, String condition, Object right){
if(queryElements.size()>0)
queryElements.add(QueryConjunction.AND);
queryElements.add(new QueryCondition(left instanceof String ? new QueryColumn((String) left) : left, condition, right));
return this;
}
public QueryGroup<T> where(Object left, Object right){
return where(left, "=", right);
}
public QueryGroup<T> isNull(Object left){
return where(left, "IS NULL", null);
}
public QueryGroup<T> notNull(Object left){
return where(left, "IS NOT NULL", null);
}
public QueryGroup<T> lessThan(Object left, Object right){
return where(left, "<", right);
}
public QueryGroup<T> greaterThan(Object left, Object right){
return where(left, ">", right);
}
public QueryGroup<T> orWhere(Object left, String condition, Object right){
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.OR);
queryElements.add(new QueryCondition(left instanceof String ? new QueryColumn((String) left) : left, condition, right));
return this;
}
public QueryGroup<T> orWhere(Object left, Object right){
return orWhere(left, "=", right);
}
public QueryGroup<T> orIsNull(Object left){
return orWhere(left, "IS NULL", null);
}
public QueryGroup<T> orNotNull(Object left){
return orWhere(left, "IS NOT NULL", null);
}
public QueryGroup<T> orLessThan(Object left, Object right){
return orWhere(left, "<", right);
}
public QueryGroup<T> orGreaterThan(Object left, Object right){
return orWhere(left, ">", right);
}
public <M extends Model> QueryGroup<T> whereExists(Class<M> model, Consumer<Query<M>> consumer){
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.AND);
Query<M> query = new Query<>(model);
consumer.accept(query);
queryElements.add(new QueryExists<>(query, false));
return this;
}
public <M extends Model> QueryGroup<T> orWhereExists(Class<M> model, Consumer<Query<M>> consumer){
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.OR);
Query<M> query = new Query<>(model);
consumer.accept(query);
queryElements.add(new QueryExists<>(query, false));
return this;
}
public <M extends Model> QueryGroup<T> whereNotExists(Class<M> model, Consumer<Query<M>> consumer){
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.AND);
Query<M> query = new Query<>(model);
consumer.accept(query);
queryElements.add(new QueryExists<>(query, true));
return this;
}
public <M extends Model> QueryGroup<T> orWhereNotExists(Class<M> model, Consumer<Query<M>> consumer){
if(queryElements.size() > 0)
queryElements.add(QueryConjunction.OR);
Query<M> query = new Query<>(model);
consumer.accept(query);
queryElements.add(new QueryExists<>(query, true));
return this;
}
public QueryString getQueryString(TableInfo info){
StringBuilder sb = new StringBuilder("(");
List<Object> parameters = new ArrayList<>();
for(QueryElement element : queryElements){
if(sb.length() > 1)
sb.append(' ');
QueryString s = element.getQueryString(info);
sb.append(s.getQuery());
parameters.addAll(s.getParameters());
}
sb.append(')');
return new QueryString(sb.toString(), parameters);
}
}