Java Multimap.remove方法代码示例

import com.google.common.collect.Multimap; //导入方法依赖的package包/类
private void removeItem(@NonNull ResourceItem removedItem) {
    synchronized (ITEM_MAP_LOCK) {
        Multimap<String, ResourceItem> map = getMap(removedItem.getType(), false);
        if (map != null) {
            map.remove(removedItem.getName(), removedItem);
        }
    }
}
 

import com.google.common.collect.Multimap; //导入方法依赖的package包/类
private synchronized void setAllInstitutions(Map<Long, InstitutionStatus> map)
{
	allInstitutions = ImmutableMap.copyOf(map);

	Multimap<Long, Institution> newlyAvailable = ArrayListMultimap.create();
	Multimap<Long, Institution> newlyUnavailable = ArrayListMultimap.create(availableInstitutions);
	Builder<Long, Institution> availableBuilder = ImmutableMultimap.builder();
	ImmutableMap.Builder<Long, Long> schemaBuilder = ImmutableMap.builder();
	ImmutableMap.Builder<Long, Institution> instBuilder = ImmutableMap.builder();
	for( Entry<Long, InstitutionStatus> entry : allInstitutions.entrySet() )
	{
		InstitutionStatus instStatus = entry.getValue();
		Institution institution = instStatus.getInstitution();
		Long schemaId = instStatus.getSchemaId();
		if( instStatus.isValid() && institution.isEnabled() )
		{
			availableBuilder.put(schemaId, institution);
			if( !newlyUnavailable.remove(schemaId, institution) )
			{
				newlyAvailable.put(schemaId, institution);
			}
		}
		long uniqueId = institution.getUniqueId();
		schemaBuilder.put(uniqueId, schemaId);
		instBuilder.put(uniqueId, institution);
	}

	availableInstitutions = availableBuilder.build();
	schemaMap = schemaBuilder.build();
	instMap = instBuilder.build();

	if( !newlyAvailable.isEmpty() )
	{
		eventService.publishApplicationEvent(new InstitutionEvent(InstitutionEventType.AVAILABLE, newlyAvailable));
	}

	if( !newlyUnavailable.isEmpty() )
	{
		eventService
				.publishApplicationEvent(new InstitutionEvent(InstitutionEventType.UNAVAILABLE, newlyUnavailable));
	}
}
 

import com.google.common.collect.Multimap; //导入方法依赖的package包/类
private EventColumn translateColumn(EventData data, EventColumn scolumn, TableInfoHolder tableHolder,
                                    DataMediaPair dataMediaPair, Multimap<String, String> translateColumnNames) {
    EventType type = data.getEventType();
    EventColumn tcolumn = new EventColumn();
    tcolumn.setNull(scolumn.getColumnValue() == null);
    tcolumn.setKey(scolumn.isKey());// 左右两边的主键值必须保持一样，可以不为物理主键
    tcolumn.setIndex(scolumn.getIndex());
    tcolumn.setUpdate(scolumn.isUpdate());

    String columnName = translateColumnName(scolumn.getColumnName(), dataMediaPair, translateColumnNames);
    if (StringUtils.isBlank(columnName)) {
        throw new TransformException("can't translate column name:" + scolumn.getColumnName() + "in pair:"
                                     + dataMediaPair.toString());
    }

    // 特殊处理
    // columnName = StringUtils.remove(columnName, "`"); //
    // 处理下特殊字符，eromanga给了错误的字段名
    tcolumn.setColumnName(columnName);
    tcolumn.setColumnType(scolumn.getColumnType());// 不反查，直接使用源库的类型
    if (tableHolder != null) {
        // modify by ljh at 2013-01-23
        // 双向同步新增字段，在一边加了字段后，虽然新的字段没有产生业务变化，但会因为某些原因导致传递了新的字段到T模块
        // 此时在目标库并不存在这个字段，导致一直挂起。ps. mysql新增字段时间不是一般的长
        // 所以，做了一个容错处理，针对目标库不存在的字段，如果变更记录在源库不存在变更，并且是null值的，允许丢弃该字段(其实最好还是要判断源库的column的defaultValue和当前值是否一致)
        boolean canColumnsNotExist = tableHolder.isEnableCompatibleMissColumn();
        if (type == EventType.UPDATE) {
            // 非变更字段，且当前值为null
            canColumnsNotExist &= !scolumn.isUpdate() && scolumn.isNull();
        } else if (type == EventType.INSERT) {
            // 当前值为null
            canColumnsNotExist &= scolumn.isNull();
        } else if (type == EventType.DELETE) {
            canColumnsNotExist &= !scolumn.isKey(); // 主键不允许不存在
        }

        Column matchDbColumn = getMatchColumn(tableHolder.getTable().getColumns(), tcolumn.getColumnName());
        // 匹配字段为空，可能源库发生过DDL操作，目标库重新载入一下meta信息
        if (matchDbColumn == null) { // 尝试reload一下table meta
            // 获取目标库的表信息
            DbMediaSource dbMediaSource = (DbMediaSource) dataMediaPair.getTarget().getSource();
            DbDialect dbDialect = dbDialectFactory.getDbDialect(dataMediaPair.getPipelineId(), dbMediaSource);
            String schemaName = tableHolder.getTable().getSchema();
            if (StringUtils.isEmpty(schemaName)) {
                schemaName = tableHolder.getTable().getCatalog();
            }
            Table table = dbDialect.findTable(schemaName, tableHolder.getTable().getName(), false); // 强制反查一次，并放入cache

            tableHolder.setTable(table);
            matchDbColumn = getMatchColumn(tableHolder.getTable().getColumns(), tcolumn.getColumnName());
            if (matchDbColumn == null) {
                if (canColumnsNotExist) {
                    return null;
                } else {
                    throw new TransformException(scolumn.getColumnName() + " is not found in " + table.toString()
                                                 + " and source : " + dataMediaPair.getTarget().getNamespace()
                                                 + "." + dataMediaPair.getTarget().getName());
                }
            }
        }

        if (tableHolder.isUseTableTransform()) {
            int sqlType = matchDbColumn.getTypeCode();
            tcolumn.setColumnType(sqlType);
        }
    }

    // if (dataMediaPair.getTarget().getSource().getType().isOracle()) {
    // // 特殊处理下oracle编码
    // String encodeValue = SqlUtils.encoding(scolumn.getColumnValue(),
    // scolumn.getColumnType(),
    // dataMediaPair.getSource().getSource().getEncode(),
    // dataMediaPair.getTarget().getSource().getEncode());
    // tcolumn.setColumnValue(encodeValue);
    // } else {
    // mysql编码转化已经在驱动层面上完成
    tcolumn.setColumnValue(scolumn.getColumnValue());
    // }
    translateColumnNames.remove(scolumn.getColumnName(), columnName);// 删除映射关系，避免下次重复转换
    return tcolumn;
}