Java JExpr._new方法代碼示例

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
private void addFactoryMethod(JDefinedClass _enum, JType backingType) {
    JFieldVar quickLookupMap = addQuickLookupMap(_enum, backingType);

    JMethod fromValue = _enum.method(JMod.PUBLIC | JMod.STATIC, _enum, "fromValue");
    JVar valueParam = fromValue.param(backingType, "value");

    JBlock body = fromValue.body();
    JVar constant = body.decl(_enum, "constant");
    constant.init(quickLookupMap.invoke("get").arg(valueParam));

    JConditional _if = body._if(constant.eq(JExpr._null()));

    JInvocation illegalArgumentException = JExpr._new(_enum.owner().ref(IllegalArgumentException.class));
    JExpression expr = valueParam;

    // if string no need to add ""
    if(!isString(backingType)){
        expr = expr.plus(JExpr.lit(""));
    }

    illegalArgumentException.arg(expr);
    _if._then()._throw(illegalArgumentException);
    _if._else()._return(constant);

    ruleFactory.getAnnotator().enumCreatorMethod(fromValue);
}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
/**
 * Creates a default value for a set property by:
 * <ol>
 * <li>Creating a new {@link LinkedHashSet} with the correct generic type
 * <li>Using {@link Arrays#asList(Object...)} to initialize the set with the
 * correct default values
 * </ol>
 *
 * @param fieldType
 *            the java type that applies for this field ({@link Set} with
 *            some generic type argument)
 * @param node
 *            the node containing default values for this set
 * @return an expression that creates a default value that can be assigned
 *         to this field
 */
private JExpression getDefaultSet(JType fieldType, JsonNode node) {

    JClass setGenericType = ((JClass) fieldType).getTypeParameters().get(0);

    JClass setImplClass = fieldType.owner().ref(LinkedHashSet.class);
    setImplClass = setImplClass.narrow(setGenericType);

    JInvocation newSetImpl = JExpr._new(setImplClass);

    if (node instanceof ArrayNode && node.size() > 0) {
        JInvocation invokeAsList = fieldType.owner().ref(Arrays.class).staticInvoke("asList");
        for (JsonNode defaultValue : node) {
            invokeAsList.arg(getDefaultValue(setGenericType, defaultValue));
        }
        newSetImpl.arg(invokeAsList);
    } else if (!ruleFactory.getGenerationConfig().isInitializeCollections()) {
        return JExpr._null();
    }

    return newSetImpl;

}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
/**
 * Creates a default value for a list property by:
 * <ol>
 * <li>Creating a new {@link ArrayList} with the correct generic type
 * <li>Using {@link Arrays#asList(Object...)} to initialize the list with
 * the correct default values
 * </ol>
 *
 * @param fieldType
 *            the java type that applies for this field ({@link List} with
 *            some generic type argument)
 * @param node
 *            the node containing default values for this list
 * @return an expression that creates a default value that can be assigned
 *         to this field
 */
private JExpression getDefaultList(JType fieldType, JsonNode node) {

    JClass listGenericType = ((JClass) fieldType).getTypeParameters().get(0);

    JClass listImplClass = fieldType.owner().ref(ArrayList.class);
    listImplClass = listImplClass.narrow(listGenericType);

    JInvocation newListImpl = JExpr._new(listImplClass);

    if (node instanceof ArrayNode && node.size() > 0) {
        JInvocation invokeAsList = fieldType.owner().ref(Arrays.class).staticInvoke("asList");
        for (JsonNode defaultValue : node) {
            invokeAsList.arg(getDefaultValue(listGenericType, defaultValue));
        }
        newListImpl.arg(invokeAsList);
    } else if (!ruleFactory.getGenerationConfig().isInitializeCollections()) {
        return JExpr._null();
    }

    return newListImpl;

}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
private void addHashCode(JDefinedClass jclass, JsonNode node) {
    Map<String, JFieldVar> fields = removeFieldsExcludedFromEqualsAndHashCode(jclass.fields(), node);

    JMethod hashCode = jclass.method(JMod.PUBLIC, int.class, "hashCode");

    Class<?> hashCodeBuilder = ruleFactory.getGenerationConfig().isUseCommonsLang3() ? org.apache.commons.lang3.builder.HashCodeBuilder.class : org.apache.commons.lang.builder.HashCodeBuilder.class;

    JBlock body = hashCode.body();
    JClass hashCodeBuilderClass = jclass.owner().ref(hashCodeBuilder);
    JInvocation hashCodeBuilderInvocation = JExpr._new(hashCodeBuilderClass);

    if (!jclass._extends().fullName().equals(Object.class.getName())) {
        hashCodeBuilderInvocation = hashCodeBuilderInvocation.invoke("appendSuper").arg(JExpr._super().invoke("hashCode"));
    }

    for (JFieldVar fieldVar : fields.values()) {
        if ((fieldVar.mods().getValue() & JMod.STATIC) == JMod.STATIC) {
            continue;
        }
        hashCodeBuilderInvocation = hashCodeBuilderInvocation.invoke("append").arg(fieldVar);
    }

    body._return(hashCodeBuilderInvocation.invoke("toHashCode"));

    hashCode.annotate(Override.class);
}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
private JInvocation getUDFInstance(JCodeModel m) {
  if (isGenericUDF) {
    return JExpr._new(m.directClass(genericUdfClazz.getCanonicalName()));
  } else {
    return JExpr._new(m.directClass(GenericUDFBridge.class.getCanonicalName()))
      .arg(JExpr.lit(udfName))
      .arg(JExpr.lit(false))
      .arg(JExpr.lit(udfClazz.getCanonicalName().toString()));
  }
}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
private void addEquals(JDefinedClass jclass, JsonNode node) {
    Map<String, JFieldVar> fields = removeFieldsExcludedFromEqualsAndHashCode(jclass.fields(), node);

    JMethod equals = jclass.method(JMod.PUBLIC, boolean.class, "equals");
    JVar otherObject = equals.param(Object.class, "other");

    Class<?> equalsBuilder = ruleFactory.getGenerationConfig().isUseCommonsLang3() ? org.apache.commons.lang3.builder.EqualsBuilder.class : org.apache.commons.lang.builder.EqualsBuilder.class;

    JBlock body = equals.body();

    body._if(otherObject.eq(JExpr._this()))._then()._return(JExpr.TRUE);
    body._if(otherObject._instanceof(jclass).eq(JExpr.FALSE))._then()._return(JExpr.FALSE);

    JVar rhsVar = body.decl(jclass, "rhs").init(JExpr.cast(jclass, otherObject));
    JClass equalsBuilderClass = jclass.owner().ref(equalsBuilder);
    JInvocation equalsBuilderInvocation = JExpr._new(equalsBuilderClass);

    if (!jclass._extends().fullName().equals(Object.class.getName())) {
        equalsBuilderInvocation = equalsBuilderInvocation.invoke("appendSuper").arg(JExpr._super().invoke("equals").arg(otherObject));
    }

    for (JFieldVar fieldVar : fields.values()) {
        if ((fieldVar.mods().getValue() & JMod.STATIC) == JMod.STATIC) {
            continue;
        }
        equalsBuilderInvocation = equalsBuilderInvocation.invoke("append")
                .arg(fieldVar)
                .arg(rhsVar.ref(fieldVar.name()));
    }

    JInvocation reflectionEquals = jclass.owner().ref(equalsBuilder).staticInvoke("reflectionEquals");
    reflectionEquals.arg(JExpr._this());
    reflectionEquals.arg(otherObject);

    body._return(equalsBuilderInvocation.invoke("isEquals"));

    equals.annotate(Override.class);
}
 

import com.sun.codemodel.JExpr; //導入方法依賴的package包/類
static JExpression getDefaultValue(JType fieldType, JsonNode node) {

        fieldType = fieldType.unboxify();

        if (fieldType.fullName().equals(String.class.getName())) {
            return JExpr.lit(node.asText());

        } else if (fieldType.fullName().equals(int.class.getName())) {
            return JExpr.lit(Integer.parseInt(node.asText()));

        } else if (fieldType.fullName().equals(BigInteger.class.getName())) {
            return JExpr._new(fieldType).arg(JExpr.lit(node.asText()));

        } else if (fieldType.fullName().equals(double.class.getName())) {
            return JExpr.lit(Double.parseDouble(node.asText()));

        } else if (fieldType.fullName().equals(BigDecimal.class.getName())) {
            return JExpr._new(fieldType).arg(JExpr.lit(node.asText()));

        } else if (fieldType.fullName().equals(boolean.class.getName())) {
            return JExpr.lit(Boolean.parseBoolean(node.asText()));

        } else if (fieldType.fullName().equals(DateTime.class.getName()) || fieldType.fullName().equals(Date.class.getName())) {
            long millisecs = parseDateToMillisecs(node.asText());

            JInvocation newDateTime = JExpr._new(fieldType);
            newDateTime.arg(JExpr.lit(millisecs));

            return newDateTime;

        } else if (fieldType.fullName().equals(LocalDate.class.getName()) || fieldType.fullName().equals(LocalTime.class.getName())) {

            JInvocation stringParseableTypeInstance = JExpr._new(fieldType);
            stringParseableTypeInstance.arg(JExpr.lit(node.asText()));
            return stringParseableTypeInstance;

        } else if (fieldType.fullName().equals(long.class.getName())) {
            return JExpr.lit(Long.parseLong(node.asText()));

        } else if (fieldType.fullName().equals(float.class.getName())) {
            return JExpr.lit(Float.parseFloat(node.asText()));

        } else if (fieldType.fullName().equals(URI.class.getName())) {
            JInvocation invokeCreate = fieldType.owner().ref(URI.class).staticInvoke("create");
            return invokeCreate.arg(JExpr.lit(node.asText()));

        } else if (fieldType instanceof JDefinedClass && ((JDefinedClass) fieldType).getClassType().equals(ClassType.ENUM)) {

            return getDefaultEnum(fieldType, node);

        } else {
            return JExpr._null();

        }

    }