forked from D-Net/dnet-hadoop
34 lines
1.3 KiB
Java
34 lines
1.3 KiB
Java
package eu.dnetlib.dhp.common.java.porttype;
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/**
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* Type of the port. This is used to specify what kind of data is
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* accepted on a certain input port or produced on a certain output port
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* of a workflow node.
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*
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* @author Mateusz Kobos
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*
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*/
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public interface PortType {
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String getName();
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/**
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* This should be used to check whether data produced by a workflow node
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* conforms to the data consumed by other workflow node.
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* In a scenario when A produces certain data on a port p and B consumes
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* this data on a port q, type(q).accepts(type(p)) has to be true.
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*
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* @return {@code true} if {@code this} port type is a more general
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* version of the {@code other} port type,
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* or as an alternative explanation: {@code other} is a subset of
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* {@code this}, i.e. {@code other} has at least all the properties present
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* in {@code this} (and possibly some others). This is analogous to a
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* situation in object-oriented programming, where in order for assignment
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* operation {@code this = other} to work, the type of {@code this} has to
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* accept type of {@code other}, or in other words {@code other} has to
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* inherit from {@code this}, or in yet other words: {@code other} has to
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* conform to {@code this}.
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*/
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boolean accepts(PortType other);
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}
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