Examples with PageContext com.google.api.gax.rpc.PageContext used on opensource projects

Example 1 with PageContext

use of com.google.api.gax.rpc.PageContext in project gapic-generator-java by googleapis.

the class AbstractServiceStubSettingsClassComposer method createPagedListResponseFactoryAssignExpr.

private static Expr createPagedListResponseFactoryAssignExpr(VariableExpr pageStrDescVarExpr, Method method, TypeNode repeatedResponseType, TypeStore typeStore) {
    Preconditions.checkState(method.isPaged(), String.format("Method %s is not paged", method.name()));
    // Create the PagedListResponseFactory.
    TypeNode pagedResponseType = typeStore.get(getPagedResponseTypeName(method.name()));
    TypeNode apiFutureType = TypeNode.withReference(ConcreteReference.builder().setClazz(ApiFuture.class).setGenerics(Arrays.asList(pagedResponseType.reference())).build());
    VariableExpr callableVarExpr = VariableExpr.withVariable(Variable.builder().setType(TypeNode.withReference(ConcreteReference.builder().setClazz(UnaryCallable.class).setGenerics(Arrays.asList(method.inputType().reference(), method.outputType().reference())).build())).setName("callable").build());
    VariableExpr requestVarExpr = VariableExpr.withVariable(Variable.builder().setType(method.inputType()).setName("request").build());
    VariableExpr contextVarExpr = VariableExpr.withVariable(Variable.builder().setType(FIXED_TYPESTORE.get("ApiCallContext")).setName("context").build());
    VariableExpr futureResponseVarExpr = VariableExpr.withVariable(Variable.builder().setType(TypeNode.withReference(ConcreteReference.builder().setClazz(ApiFuture.class).setGenerics(Arrays.asList(method.outputType().reference())).build())).setName("futureResponse").build());
    TypeNode pageContextType = TypeNode.withReference(ConcreteReference.builder().setClazz(PageContext.class).setGenerics(Arrays.asList(method.inputType(), method.outputType(), repeatedResponseType).stream().map(t -> t.reference()).collect(Collectors.toList())).build());
    VariableExpr pageContextVarExpr = VariableExpr.withVariable(Variable.builder().setType(pageContextType).setName("pageContext").build());
    AssignmentExpr pageContextAssignExpr = AssignmentExpr.builder().setVariableExpr(pageContextVarExpr.toBuilder().setIsDecl(true).build()).setValueExpr(MethodInvocationExpr.builder().setStaticReferenceType(FIXED_TYPESTORE.get("PageContext")).setMethodName("create").setArguments(callableVarExpr, pageStrDescVarExpr, requestVarExpr, contextVarExpr).setReturnType(pageContextVarExpr.type()).build()).build();
    Expr returnExpr = MethodInvocationExpr.builder().setStaticReferenceType(typeStore.get(getPagedResponseTypeName(method.name()))).setMethodName("createAsync").setArguments(pageContextVarExpr, futureResponseVarExpr).setReturnType(apiFutureType).build();
    MethodDefinition getFuturePagedResponseMethod = MethodDefinition.builder().setIsOverride(true).setScope(ScopeNode.PUBLIC).setReturnType(apiFutureType).setName("getFuturePagedResponse").setArguments(Arrays.asList(callableVarExpr, requestVarExpr, contextVarExpr, futureResponseVarExpr).stream().map(v -> v.toBuilder().setIsDecl(true).build()).collect(Collectors.toList())).setBody(Arrays.asList(ExprStatement.withExpr(pageContextAssignExpr))).setReturnExpr(returnExpr).build();
    // Create the variable.
    TypeNode pagedResponseFactoryType = TypeNode.withReference(ConcreteReference.builder().setClazz(PagedListResponseFactory.class).setGenerics(Arrays.asList(method.inputType(), method.outputType(), typeStore.get(getPagedResponseTypeName(method.name()))).stream().map(t -> t.reference()).collect(Collectors.toList())).build());
    String varName = String.format(PAGED_RESPONSE_FACTORY_PATTERN, JavaStyle.toUpperSnakeCase(method.name()));
    VariableExpr pagedListResponseFactoryVarExpr = VariableExpr.withVariable(Variable.builder().setType(pagedResponseFactoryType).setName(varName).build());
    AnonymousClassExpr factoryAnonClassExpr = AnonymousClassExpr.builder().setType(pagedResponseFactoryType).setMethods(Arrays.asList(getFuturePagedResponseMethod)).build();
    return AssignmentExpr.builder().setVariableExpr(pagedListResponseFactoryVarExpr.toBuilder().setIsDecl(true).setScope(ScopeNode.PRIVATE).setIsStatic(true).setIsFinal(true).build()).setValueExpr(factoryAnonClassExpr).build();
}