dk.eobjects.metamodel.query.Query.getFromClause()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dk.eobjects.metamodel.query.Query.getFromClause方法的一些代码示例，展示了Query.getFromClause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.getFromClause方法的具体详情如下：
包路径：dk.eobjects.metamodel.query.Query
类名称：Query
方法名：getFromClause

Query.getFromClause介绍

暂无

代码示例

代码示例来源：origin: dk.eobjects.commons/MetaModel

/**
 * Examines a query and extracts an array of FromItem's that refer
 * (directly) to tables (hence Joined FromItems and SubQuery FromItems are
 * traversed but not included).
 * 
 * @param q
 *            the query to examine
 * @return
 */
public static FromItem[] getTableFromItems(Query q) {
  List<FromItem> result = new ArrayList<FromItem>();
  List<FromItem> items = q.getFromClause().getItems();
  for (FromItem item : items) {
    result.addAll(getTableFromItems(item));
  }
  return result.toArray(new FromItem[result.size()]);
}

代码示例来源：origin: dk.eobjects.metamodel/MetaModel-jdbc

private Integer getSubQueryFromItemIndex() {
  List<FromItem> fromItems = _query.getFromClause().getItems();
  for (int i = 0; i < fromItems.size(); i++) {
    Query subQuery = fromItems.get(i).getSubQuery();
    if (subQuery != null) {
      if (isSplittable(subQuery)) {
        return i;
      }
    }
  }
  return null;
}

代码示例来源：origin: dk.eobjects.commons/MetaModel

private Integer getSubQueryFromItemIndex() {
  List<FromItem> fromItems = _query.getFromClause().getItems();
  for (int i = 0; i < fromItems.size(); i++) {
    Query subQuery = fromItems.get(i).getSubQuery();
    if (subQuery != null) {
      if (isSplittable(subQuery)) {
        return i;
      }
    }
  }
  return null;
}

代码示例来源：origin: dk.eobjects.commons/MetaModel

@Override
public boolean equals(Object obj) {
  if (obj == this) {
    return true;
  }
  if (obj instanceof Query) {
    Query that = (Query) obj;
    EqualsBuilder eb = new EqualsBuilder();
    eb.append(this.getMaxRows(), that.getMaxRows());
    eb.append(this.getSelectClause(), that.getSelectClause());
    eb.append(this.getFromClause(), that.getFromClause());
    eb.append(this.getWhereClause(), that.getWhereClause());
    eb.append(this.getGroupByClause(), that.getGroupByClause());
    eb.append(this.getHavingClause(), that.getHavingClause());
    eb.append(this.getOrderByClause(), that.getOrderByClause());
    return eb.isEquals();
  }
  return false;
}

代码示例来源：origin: dk.eobjects.commons/MetaModel

public StringBuilder toStringNoAlias() {
  StringBuilder sb = new StringBuilder();
  if (_column != null) {
    Table table = _column.getTable();
    if (table != null && _query != null) {
      String alias = _query.getFromClause().getAlias(table);
      if (alias == null) {
        alias = table.getQuotedName();
      }
      sb.append(alias);
      sb.append(".");
    }
    sb.append(_column.getQuotedName());
  }
  if (_expression != null) {
    sb.append(_expression);
  }
  if (_subQueryFromItem != null && _subQuerySelectItem != null) {
    if (_subQueryFromItem.getAlias() != null) {
      sb.append(_subQueryFromItem.getAlias() + '.');
    }
    sb.append(_subQuerySelectItem.getSuperQueryAlias());
  }
  if (_function != null) {
    sb.insert(0, _function + "(");
    sb.append(")");
  }
  return sb;
}

代码示例来源：origin: dk.eobjects.commons/MetaModel

Table table = _column.getTable();
if (table != null && _query != null) {
  String alias = _query.getFromClause().getAlias(table);
  if (alias == null) {
    alias = table.getQuotedName();

代码示例来源：origin: dk.eobjects.metamodel/MetaModel-jdbc

public String rewriteQuery(JdbcDataContextStrategy strategy, Query query) {
  query = beforeRewrite(strategy, query);
  StringBuilder sb = new StringBuilder();
  sb
      .append(rewriteSelectClause(strategy, query, query
          .getSelectClause()));
  sb.append(rewriteFromClause(strategy, query, query.getFromClause()));
  sb.append(rewriteWhereClause(strategy, query, query.getWhereClause()));
  sb.append(rewriteGroupByClause(strategy, query, query
      .getGroupByClause()));
  sb
      .append(rewriteHavingClause(strategy, query, query
          .getHavingClause()));
  sb.append(rewriteOrderByClause(strategy, query, query
      .getOrderByClause()));
  return sb.toString();
}

代码示例来源：origin: dk.eobjects.commons/MetaModel

public String rewriteQuery(JdbcDataContextStrategy strategy, Query query) {
  query = beforeRewrite(strategy, query);
  StringBuilder sb = new StringBuilder();
  sb
      .append(rewriteSelectClause(strategy, query, query
          .getSelectClause()));
  sb.append(rewriteFromClause(strategy, query, query.getFromClause()));
  sb.append(rewriteWhereClause(strategy, query, query.getWhereClause()));
  sb.append(rewriteGroupByClause(strategy, query, query
      .getGroupByClause()));
  sb
      .append(rewriteHavingClause(strategy, query, query
          .getHavingClause()));
  sb.append(rewriteOrderByClause(strategy, query, query
      .getOrderByClause()));
  return sb.toString();
}

代码示例来源：origin: dk.eobjects.metamodel/MetaModel-querypostprocessor

public DataSet executeQuery(Query query) throws MetaModelException {
  Set<DataContext> dataContexts = new HashSet<DataContext>();
  List<FromItem> items = query.getFromClause().getItems();
  for (FromItem item : items) {
    List<FromItem> tableFromItems = MetaModelHelper

代码示例来源：origin: dk.eobjects.commons/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: dk.eobjects.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: dk.eobjects.commons/MetaModel

public DataSet executeQuery(Query query) {
  List<SelectItem> selectItems = query.getSelectClause().getItems();
  List<FromItem> fromItems = query.getFromClause().getItems();
  List<FilterItem> whereItems = query.getWhereClause().getItems();
  List<SelectItem> whereSelectItems = query.getWhereClause()

代码示例来源：origin: dk.eobjects.metamodel/MetaModel-querypostprocessor

public DataSet executeQuery(Query query) {
  List<SelectItem> selectItems = query.getSelectClause().getItems();
  List<FromItem> fromItems = query.getFromClause().getItems();
  List<FilterItem> whereItems = query.getWhereClause().getItems();
  List<SelectItem> whereSelectItems = query.getWhereClause()

代码示例来源：origin: dk.eobjects.metamodel/MetaModel-jdbc

@Override
protected Query beforeRewrite(JdbcDataContextStrategy strategy, Query query) {
  query = query.clone();
  if (strategy != null) {
    String identifierQuoteString = strategy.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: dk.eobjects.metamodel/MetaModel-jdbc

List<FromItem> fromItems = _query.getFromClause().getItems();
for (FromItem fromItem : fromItems) {
  if (fromItem.getTable() != null) {

代码示例来源：origin: dk.eobjects.commons/MetaModel

@Override
protected Query beforeRewrite(JdbcDataContextStrategy strategy, Query query) {
  query = query.clone();
  if (strategy != null) {
    String identifierQuoteString = strategy.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: dk.eobjects.commons/MetaModel

List<FromItem> fromItems = _query.getFromClause().getItems();
for (FromItem fromItem : fromItems) {
  if (fromItem.getTable() != null) {

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