Java Function类代码示例

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException
{
    state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.MODIFY);

    // CAS updates can be used to simulate a SELECT query, so should require Permission.SELECT as well.
    if (hasConditions())
        state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.SELECT);

    // MV updates need to get the current state from the table, and might update the views
    // Require Permission.SELECT on the base table, and Permission.MODIFY on the views
    Iterator<ViewDefinition> views = View.findAll(keyspace(), columnFamily()).iterator();
    if (views.hasNext())
    {
        state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.SELECT);
        do
        {
            state.hasColumnFamilyAccess(keyspace(), views.next().viewName, Permission.MODIFY);
        } while (views.hasNext());
    }

    for (Function function : getFunctions())
        state.ensureHasPermission(Permission.EXECUTE, function);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void checkAccess(ClientState state) throws InvalidRequestException, UnauthorizedException
{
    if (cfm.isView())
    {
        CFMetaData baseTable = View.findBaseTable(keyspace(), columnFamily());
        if (baseTable != null)
            state.hasColumnFamilyAccess(keyspace(), baseTable.cfName, Permission.SELECT);
    }
    else
    {
        state.hasColumnFamilyAccess(keyspace(), columnFamily(), Permission.SELECT);
    }

    for (Function function : getFunctions())
        state.ensureHasPermission(Permission.EXECUTE, function);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void addFunctionsTo(List<Function> functions)
{
    if (timestamp != null)
        timestamp.addFunctionsTo(functions);
    if (timeToLive != null)
        timeToLive.addFunctionsTo(functions);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
private static void removeInvalidPreparedStatementsForFunction(Iterator<ParsedStatement.Prepared> statements,
                                                               final String ksName,
                                                               final String functionName)
{
    Predicate<Function> matchesFunction = f -> ksName.equals(f.name().keyspace) && functionName.equals(f.name().name);
    Iterators.removeIf(statements, statement -> Iterables.any(statement.statement.getFunctions(), matchesFunction));
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void addFunctionsTo(List<Function> functions)
{
    if (hasBound(Bound.START))
        bound(Bound.START).addFunctionsTo(functions);

    if (hasBound(Bound.END))
        bound(Bound.END).addFunctionsTo(functions);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
@Override
public void addFunctionsTo(List<Function> functions)
{
    Terms.addFunctions(values, functions);
    Terms.addFunctions(keys, functions);
    Terms.addFunctions(entryKeys, functions);
    Terms.addFunctions(entryValues, functions);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
@Override
public void addFunctionsTo(List<Function> functions)
{
    Restriction previous = null;
    for (Restriction restriction : restrictions.values())
    {
        // For muti-column restriction, we can have multiple time the same restriction.
        if (!restriction.equals(previous))
        {
            previous = restriction;
            restriction.addFunctionsTo(functions);
        }
    }
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
/**
 * Returns the names of the columns corresponding to the output values of the selector instances created by
 * these factories.
 *
 * @return a list of column names
 */
public List<String> getColumnNames()
{
    return Lists.transform(factories, new com.google.common.base.Function<Selector.Factory, String>()
    {
        public String apply(Selector.Factory factory)
        {
            return factory.getColumnName();
        }
    });
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
/**
 * Returns a list of the return types of the selector instances created by these factories.
 *
 * @return a list of types
 */
public List<AbstractType<?>> getReturnTypes()
{
    return Lists.transform(factories, new com.google.common.base.Function<Selector.Factory, AbstractType<?>>()
    {
        public AbstractType<?> apply(Selector.Factory factory)
        {
            return factory.getReturnType();
        }
    });
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void addFunctionsTo(List<Function> functions)
{
    attrs.addFunctionsTo(functions);
    restrictions.addFunctionsTo(functions);
    operations.addFunctionsTo(functions);
    conditions.addFunctionsTo(functions);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
private void addFunctionsTo(List<Function> functions)
{
    selection.addFunctionsTo(functions);
    restrictions.addFunctionsTo(functions);

    if (limit != null)
        limit.addFunctionsTo(functions);
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public static FunctionExecutionException create(Function function, Throwable cause)
{
    List<String> cqlTypes = AbstractType.asCQLTypeStringList(function.argTypes());
    FunctionExecutionException fee = new FunctionExecutionException(function.name(), cqlTypes, cause.toString());
    fee.initCause(cause);
    return fee;
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
public void ensureHasPermission(Permission permission, Function function)
{
    // Save creating a FunctionResource is we don't need to
    if (DatabaseDescriptor.getAuthorizer() instanceof AllowAllAuthorizer)
        return;

    // built in functions are always available to all
    if (function.isNative())
        return;

    checkPermissionOnResourceChain(permission, FunctionResource.function(function.name().keyspace,
                                                                         function.name().name,
                                                                         function.argTypes()));
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
private FunctionResource functionResource(String functionName)
{
    // Note that this is somewhat brittle as it assumes that function names are
    // truly unique. As such, it will break in the face of overloading.
    // It is here to avoid having to duplicate the functionality of CqlParser
    // for transforming cql types into AbstractTypes
    FunctionName fn = parseFunctionName(functionName);
    Collection<Function> functions = Schema.instance.getFunctions(fn);
    assertEquals(String.format("Expected a single function definition for %s, but found %s",
                               functionName,
                               functions.size()),
                 1, functions.size());
    return FunctionResource.function(fn.keyspace, fn.name, functions.iterator().next().argTypes());
}
 

import org.apache.cassandra.cql3.functions.Function; //导入依赖的package包/类
@Override
public void addFunctionsTo(List<Function> functions)
{
}