org.apache.metamodel.query.Query.clone()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.apache.metamodel.query.Query.clone方法的一些代码示例，展示了Query.clone的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query.clone方法的具体详情如下：
包路径：org.apache.metamodel.query.Query
类名称：Query
方法名：clone

Query.clone介绍

暂无

代码示例

代码示例来源：origin: apache/metamodel

@Override
public Query toQuery() {
  return _query.clone();
}

代码示例来源：origin: org.apache.metamodel/MetaModel-core

@Override
public Query toQuery() {
  return _query.clone();
}

代码示例来源：origin: org.apache.metamodel/MetaModel-core

/**
 * Clones the query while replacing query parameters with corresponding
 * values.
 * 
 * @param values
 * @return
 */
public Query cloneWithParameterValues(Object[] values) {
  final AtomicInteger parameterIndex = new AtomicInteger(0);
  final Query clonedQuery = _query.clone();
  replaceParametersInQuery(values, parameterIndex, _query, clonedQuery);
  return clonedQuery;
}

代码示例来源：origin: apache/metamodel

/**
 * Clones the query while replacing query parameters with corresponding
 * values.
 * 
 * @param values
 * @return
 */
public Query cloneWithParameterValues(Object[] values) {
  final AtomicInteger parameterIndex = new AtomicInteger(0);
  final Query clonedQuery = _query.clone();
  replaceParametersInQuery(values, parameterIndex, _query, clonedQuery);
  return clonedQuery;
}

代码示例来源：origin: datacleaner/DataCleaner

@Override
public Query getOptimizedQuery() {
  Query query = _baseQuery;
  final Set<Entry<FilterConsumer, FilterOutcome>> entries = _optimizedFilters.entrySet();
  if (!entries.isEmpty()) {
    // create a copy/clone of the original query
    query = query.clone();
    for (final Entry<FilterConsumer, FilterOutcome> entry : entries) {
      final FilterConsumer consumer = entry.getKey();
      final FilterOutcome outcome = entry.getValue();
      final Filter<?> filter = consumer.getComponent();
      @SuppressWarnings("rawtypes") final QueryOptimizedFilter queryOptimizedFilter =
          (QueryOptimizedFilter) filter;
      @SuppressWarnings("unchecked") final Query newQuery =
          queryOptimizedFilter.optimizeQuery(query, outcome.getCategory());
      query = newQuery;
    }
  }
  return query;
}

代码示例来源：origin: org.eobjects.analyzerbeans/AnalyzerBeans-core

/**
 * Gets the optimized query.
 * 
 * @return
 */
public Query getOptimizedQuery() {
  // if (isOptimizable()) {
  // return _baseQuery;
  // }
  // create a copy/clone of the original query
  Query q = _baseQuery.clone();
  Set<Entry<FilterConsumer, FilterOutcome>> entries = _optimizedFilters.entrySet();
  for (Entry<FilterConsumer, FilterOutcome> entry : entries) {
    FilterConsumer consumer = entry.getKey();
    FilterOutcome outcome = entry.getValue();
    Filter<?> filter = consumer.getComponent();
    @SuppressWarnings("rawtypes")
    QueryOptimizedFilter queryOptimizedFilter = (QueryOptimizedFilter) filter;
    @SuppressWarnings("unchecked")
    Query newQuery = queryOptimizedFilter.optimizeQuery(q, outcome.getCategory());
    q = newQuery;
  }
  return q;
}

代码示例来源：origin: apache/metamodel

@Override
protected FromItem clone() {
  FromItem f = new FromItem();
  f._alias = _alias;
  f._join = _join;
  f._table = _table;
  f._expression = _expression;
  if (_subQuery != null) {
    f._subQuery = _subQuery.clone();
  }
  if (_leftOn != null && _leftSide != null && _rightOn != null && _rightSide != null) {
    f._leftSide = _leftSide.clone();
    f._leftOn = _leftOn.clone();
    f._rightSide = _rightSide.clone();
    f._rightOn = _rightOn.clone();
  }
  return f;
}

代码示例来源：origin: org.apache.metamodel/MetaModel-core

@Override
protected FromItem clone() {
  FromItem f = new FromItem();
  f._alias = _alias;
  f._join = _join;
  f._table = _table;
  f._expression = _expression;
  if (_subQuery != null) {
    f._subQuery = _subQuery.clone();
  }
  if (_leftOn != null && _leftSide != null && _rightOn != null && _rightSide != null) {
    f._leftSide = _leftSide.clone();
    f._leftOn = _leftOn.clone();
    f._rightSide = _rightSide.clone();
    f._rightOn = _rightOn.clone();
  }
  return f;
}

代码示例来源：origin: org.apache.metamodel/MetaModel-jdbc

private List<Query> splitQueryBasedOnSubQueries(int fromItemIndex) {
  Query subQuery = _query.getFromClause().getItem(fromItemIndex).getSubQuery();
  QuerySplitter subQuerySplitter = new QuerySplitter(_dataContext, subQuery);
  subQuerySplitter.setMaxRows(_maxRows);
  List<Query> splitQueries = subQuerySplitter.splitQuery();
  List<Query> result = new ArrayList<Query>(splitQueries.size());
  for (Query splitQuery : splitQueries) {
    Query newQuery = _query.clone();
    FromClause fromClause = newQuery.getFromClause();
    String alias = fromClause.getItem(fromItemIndex).getAlias();
    fromClause.removeItem(fromItemIndex);
    newQuery.from(new FromItem(splitQuery).setAlias(alias));
    result.add(newQuery);
  }
  return result;
}

代码示例来源：origin: apache/metamodel

private List<Query> splitQueryBasedOnSubQueries(int fromItemIndex) {
  Query subQuery = _query.getFromClause().getItem(fromItemIndex).getSubQuery();
  QuerySplitter subQuerySplitter = new QuerySplitter(_dataContext, subQuery);
  subQuerySplitter.setMaxRows(_maxRows);
  List<Query> splitQueries = subQuerySplitter.splitQuery();
  List<Query> result = new ArrayList<Query>(splitQueries.size());
  for (Query splitQuery : splitQueries) {
    Query newQuery = _query.clone();
    FromClause fromClause = newQuery.getFromClause();
    String alias = fromClause.getItem(fromItemIndex).getAlias();
    fromClause.removeItem(fromItemIndex);
    newQuery.from(new FromItem(splitQuery).setAlias(alias));
    result.add(newQuery);
  }
  return result;
}

代码示例来源：origin: org.apache.metamodel/MetaModel-jdbc

private long getRowCount(Query q) {
  q = q.clone();
  SelectItem countAllItem = SelectItem.getCountAllItem();
  if (q.getGroupByClause().getItemCount() > 0) {
    q = new Query().from(new FromItem(q).setAlias("sq")).select(countAllItem);
  } else {
    q.getSelectClause().removeItems();
    q.select(countAllItem);
  }
  Row row = MetaModelHelper.executeSingleRowQuery(_dataContext, q);
  Number count = (Number) row.getValue(countAllItem);
  return count.longValue();
}

代码示例来源：origin: apache/metamodel

private long getRowCount(Query q) {
  q = q.clone();
  SelectItem countAllItem = SelectItem.getCountAllItem();
  if (q.getGroupByClause().getItemCount() > 0) {
    q = new Query().from(new FromItem(q).setAlias("sq")).select(countAllItem);
  } else {
    q.getSelectClause().removeItems();
    q.select(countAllItem);
  }
  Row row = MetaModelHelper.executeSingleRowQuery(_dataContext, q);
  Number count = (Number) row.getValue(countAllItem);
  return count.longValue();
}

代码示例来源：origin: org.eobjects.analyzerbeans/AnalyzerBeans-core

final Query countQuery = originalQuery.clone();
countQuery.setMaxRows(null);
countQuery.setFirstRow(null);

代码示例来源：origin: datacleaner/DataCleaner

final Query countQuery = originalQuery.clone();
countQuery.setMaxRows(null);
countQuery.setFirstRow(null);

代码示例来源：origin: org.apache.metamodel/MetaModel-jdbc

@Override
protected Query beforeRewrite(Query query) {
  query = query.clone();
  JdbcDataContext dataContext = getDataContext();
  if (dataContext != null) {
    String identifierQuoteString = dataContext.getIdentifierQuoteString();
    if (identifierQuoteString != null) {
      List<SelectItem> selectItems = query.getSelectClause().getItems();
      for (SelectItem item : selectItems) {
        String alias = item.getAlias();
        if (needsQuoting(alias, identifierQuoteString)) {
          item.setAlias(identifierQuoteString + alias + identifierQuoteString);
        }
      }
      List<FromItem> fromItems = query.getFromClause().getItems();
      for (FromItem item : fromItems) {
        String alias = item.getAlias();
        if (needsQuoting(alias, identifierQuoteString)) {
          item.setAlias(identifierQuoteString + alias + identifierQuoteString);
        }
      }
    }
  }
  return query;
}

代码示例来源：origin: apache/metamodel

@Override
protected Query beforeRewrite(Query query) {
  query = query.clone();
  JdbcDataContext dataContext = getDataContext();
  if (dataContext != null) {
    String identifierQuoteString = dataContext.getIdentifierQuoteString();
    if (identifierQuoteString != null) {
      List<SelectItem> selectItems = query.getSelectClause().getItems();
      for (SelectItem item : selectItems) {
        String alias = item.getAlias();
        if (needsQuoting(alias, identifierQuoteString)) {
          item.setAlias(identifierQuoteString + alias + identifierQuoteString);
        }
      }
      List<FromItem> fromItems = query.getFromClause().getItems();
      for (FromItem item : fromItems) {
        String alias = item.getAlias();
        if (needsQuoting(alias, identifierQuoteString)) {
          item.setAlias(identifierQuoteString + alias + identifierQuoteString);
        }
      }
    }
  }
  return query;
}

代码示例来源：origin: org.apache.metamodel/MetaModel-jdbc

final Query innerQuery = query.clone();
innerQuery.setFirstRow(null);
innerQuery.setMaxRows(null);

代码示例来源：origin: apache/metamodel

final Query innerQuery = query.clone();
innerQuery.setFirstRow(null);
innerQuery.setMaxRows(null);

代码示例来源：origin: org.apache.metamodel/MetaModel-jdbc

q = _query.clone();
long lowLimit = min + (i * splitInterval);
long highLimit = lowLimit + splitInterval;

代码示例来源：origin: apache/metamodel

q = _query.clone();
long lowLimit = min + (i * splitInterval);
long highLimit = lowLimit + splitInterval;

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