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�b�W��@s<dZddlmZddlZddlZddlZGdd�de�ZdS)z)DNS nodes. A node is a set of rdatasets.�)�StringIONc@s�eZdZdZdgZdd�Zdd�Zdd�Zd d
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Node.__repr__cCs@x |jD]}||jkrdSqWx |jD]}||jkr&dSq&WdS)zSTwo nodes are equal if they have the same rdatasets.
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@param rdclass: The class of the rdataset
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@param covers: The covered type. Usually this value is
dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or
dns.rdatatype.RRSIG, then the covers value will be the rdata
type the SIG/RRSIG covers. The library treats the SIG and RRSIG
types as if they were a family of
types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA). This makes RRSIGs much
easier to work with than if RRSIGs covering different rdata
types were aggregated into a single RRSIG rdataset.
@type covers: int
@param create: If True, create the rdataset if it is not found.
@type create: bool
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@param rdclass: The class of the rdataset
@type rdclass: int
@param rdtype: The type of the rdataset
@type rdtype: int
@param covers: The covered type.
@type covers: int
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zNode.get_rdatasetcCs&|j|||�}|dk r"|jj|�dS)azDelete the rdataset matching the specified properties in the
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If a matching rdataset does not exist, it is not an error.
@param rdclass: The class of the rdataset
@type rdclass: int
@param rdtype: The type of the rdataset
@type rdtype: int
@param covers: The covered type.
@type covers: int
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It is not an error if there is no rdataset matching I{replacement}.
Ownership of the I{replacement} object is transferred to the node;
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