Package com.graphql_java_generator

Class GraphqlUtils

java.lang.Object
com.graphql_java_generator.GraphqlUtils
@Component
public class GraphqlUtils
extends java.lang.Object
Author:
EtienneSF

  • Field Summary

    Fields 
    Modifier and Type Field Description
    static GraphqlUtils graphqlUtils
    This singleton is usable in default method, within interfaces
    static java.lang.Character JAVA_KEYWORD_PREFIX  

  • Constructor Summary

    Constructors 
    Constructor Description
    GraphqlUtils()  

  • Method Summary

    Modifier and Type Method Description
    <T> java.lang.reflect.Method getGetter​(java.lang.Class<T> clazz, java.lang.reflect.Field field)
    Retrieves the getter for the given field on the given field
    <T> T getInputObject​(java.util.Map<java.lang.String,​java.lang.Object> map, java.lang.Class<T> clazz)
    This method returns a GraphQL input object, as defined in the GraphQL schema, from the Map that has been read from the JSON object sent to the server.
    java.lang.String getJavaName​(java.lang.String name)
    Returns a valid java identifier for the given name.
    <T> java.util.List<T> getListInputObjects​(java.util.List<java.util.Map<java.lang.String,​java.lang.Object>> list, java.lang.Class<T> clazz)
    This method returns a list of instances of the given class, from a list of Map.
    java.lang.reflect.Method getMethod​(java.lang.String methodName, java.lang.Class<?> clazz, java.lang.Class<?>... parameterTypes)
    Retrieves the asked method, from its name, class and parameters.
    java.lang.String getPascalCase​(java.lang.String name)
    Returns the given name in PascalCase.
    <T> java.lang.reflect.Method getSetter​(java.lang.Class<T> clazz, java.lang.reflect.Field field)
    Retrieves the setter for the given field on the given field
    java.lang.Object invokeGetter​(java.lang.Object object, java.lang.String fieldName)
    Invoke the getter for the given field name, on the given object.
    java.lang.Object invokeMethod​(java.lang.reflect.Method method, java.lang.Object o, java.lang.Object... args)
    Invoke the given setter on the given object, with the given value.
    void invokeSetter​(java.lang.Object object, java.lang.reflect.Field field, java.lang.Object value)
    Invoke the setter for the given field, on the given object.
    void invokeSetter​(java.lang.Object object, java.lang.String fieldName, java.lang.Object value)
    Invoke the setter for the Field of the given name, on the given object.
    boolean isJavaReservedWords​(java.lang.String name)
    Returns true if name is a reserved java keyword

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

  • Constructor Details

  • Method Details

    • getPascalCase

      public java.lang.String getPascalCase​(java.lang.String name)
      Returns the given name in PascalCase. For instance: theName -> TheName
      Parameters:
      name -
      Returns:

    • getInputObject

      public <T> T getInputObject​(java.util.Map<java.lang.String,​java.lang.Object> map, java.lang.Class<T> clazz)
      This method returns a GraphQL input object, as defined in the GraphQL schema, from the Map that has been read from the JSON object sent to the server.
      Type Parameters:
      T - The class expected to be returned
      Parameters:
      map - The map, read from the JSON in the GraphQL request. Only the part of the map, related to the expected class is sent.
      t - An empty instance of the expected type. This instance's fields will be set by this method, from the value in the map
      Returns:
      An instance of the expected class. If the map is null, null is returned. Of the map is empty, anew instance is returned, with all its fields are left empty

    • getListInputObjects

      public <T> java.util.List<T> getListInputObjects​(java.util.List<java.util.Map<java.lang.String,​java.lang.Object>> list, java.lang.Class<T> clazz)
      This method returns a list of instances of the given class, from a list of Map. This is used on server-side, to map the input read from the JSON into the InputType that have been declared in the GraphQL schema.
      Type Parameters:
      T -
      Parameters:
      list -
      clazz -
      Returns:

    • getSetter

      public <T> java.lang.reflect.Method getSetter​(java.lang.Class<T> clazz, java.lang.reflect.Field field)
      Retrieves the setter for the given field on the given field
      Type Parameters:
      T -
      Parameters:
      t -
      field -
      Returns:

    • getGetter

      public <T> java.lang.reflect.Method getGetter​(java.lang.Class<T> clazz, java.lang.reflect.Field field)
      Retrieves the getter for the given field on the given field
      Type Parameters:
      T -
      Parameters:
      t -
      field -
      Returns:

    • invokeGetter

      public java.lang.Object invokeGetter​(java.lang.Object object, java.lang.String fieldName)
      Invoke the getter for the given field name, on the given object. All check exceptions are hidden in a RuntimeException
      Parameters:
      object -
      fieldName -
      Returns:
      the field's value for the given object
      Throws:
      java.lang.RuntimeException - If any exception occurs

    • invokeSetter

      public void invokeSetter​(java.lang.Object object, java.lang.reflect.Field field, java.lang.Object value)
      Invoke the setter for the given field, on the given object. All check exceptions are hidden in a RuntimeException
      Parameters:
      object -
      field -
      value -
      Throws:
      java.lang.RuntimeException - If any exception occurs

    • invokeSetter

      public void invokeSetter​(java.lang.Object object, java.lang.String fieldName, java.lang.Object value)
      Invoke the setter for the Field of the given name, on the given object. All check exceptions are hidden in a RuntimeException
      Parameters:
      object -
      fieldName -
      value -
      Throws:
      java.lang.RuntimeException - If any exception occurs

    • getMethod

      public java.lang.reflect.Method getMethod​(java.lang.String methodName, java.lang.Class<?> clazz, java.lang.Class<?>... parameterTypes)
      Retrieves the asked method, from its name, class and parameters. This method hides the exception that could be thrown, into a RuntimeException
      Type Parameters:
      T -
      Parameters:
      t -
      field -
      Returns:
      Throws:
      java.lang.RuntimeException - When an exception occurs while getting the method

    • invokeMethod

      public java.lang.Object invokeMethod​(java.lang.reflect.Method method, java.lang.Object o, java.lang.Object... args)
      Invoke the given setter on the given object, with the given value. This method hides the exception that could be thrown, into a RuntimeException
      Parameters:
      method -
      o -
      value -
      Throws:
      java.lang.RuntimeException - When an exception occurs while accessing the setter

    • getJavaName

      public java.lang.String getJavaName​(java.lang.String name)
      Returns a valid java identifier for the given name.
      Parameters:
      name -
      Returns:
      If name is a default java keyword (so it is not a valid java identifier), then the return prefixed by a JAVA_KEYWORD_PREFIX. Otherwise (which is generally the case), the name is valid, and returned as is the given name

    • isJavaReservedWords

      public boolean isJavaReservedWords​(java.lang.String name)
      Returns true if name is a reserved java keyword
      Parameters:
      name -
      Returns: