OneTimeMatchQueryPlanner.java 文件源码

private List<EdgeOrVertexPropertyDescriptor> constructEdgeOrVertexPropertyDescriptorList(
    Map<String, Integer> vertexVariableOrderIndexMapAfterProjection,
    Map<String, Integer> edgeVariableOrderIndexMap,
    List<String> columnNames) {
    List<EdgeOrVertexPropertyDescriptor> edgeOrVertexPropertyIndices = new ArrayList<>();
    for (String returnVariable : structuredQuery.getReturnVariables()) {
        edgeOrVertexPropertyIndices.add(getEdgeOrVertexPropertyDescriptor(
            vertexVariableOrderIndexMapAfterProjection, edgeVariableOrderIndexMap,
            returnVariable, (short) -1 /* No property key. Use the vertex or edge ID. */));
        columnNames.add(returnVariable);
    }
    for (Pair<String, String> returnVariablePropertyPair :
        structuredQuery.getReturnVariablePropertyPairs()) {
        edgeOrVertexPropertyIndices.add(getEdgeOrVertexPropertyDescriptor(
            vertexVariableOrderIndexMapAfterProjection, edgeVariableOrderIndexMap,
            returnVariablePropertyPair.a, typeAndPropertyKeyStore.mapStringPropertyKeyToShort(
                returnVariablePropertyPair.b)));
        columnNames.add(returnVariablePropertyPair.a + "." + returnVariablePropertyPair.b);
    }
    return edgeOrVertexPropertyIndices;
}