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Add ITable/NetworkTable GetKeys and GetSubTables accessors.

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This commit is contained in:
Peter Johnson
2015-09-16 00:50:31 -07:00
parent 6cbc219427
commit c5d456f3a6
7 changed files with 141 additions and 8 deletions
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34
java/lib/NetworkTablesJNI.cpp
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@@ -15,6 +15,7 @@ static jclass booleanCls = nullptr;
static jclass doubleCls = nullptr;
static jclass stringCls = nullptr;
static jclass connectionInfoCls = nullptr;
static jclass entryInfoCls = nullptr;
static jclass keyNotDefinedEx = nullptr;
static jclass persistentEx = nullptr;
@@ -52,6 +53,12 @@ JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void *reserved) {
if (!connectionInfoCls) return JNI_ERR;
env->DeleteLocalRef(local);
local = env->FindClass("edu/wpi/first/wpilibj/networktables/EntryInfo");
if (!local) return JNI_ERR;
entryInfoCls = static_cast<jclass>(env->NewGlobalRef(local));
if (!entryInfoCls) return JNI_ERR;
env->DeleteLocalRef(local);
local =
env->FindClass("edu/wpi/first/wpilibj/networktables/NetworkTableKeyNotDefined");
keyNotDefinedEx = static_cast<jclass>(env->NewGlobalRef(local));
@@ -76,6 +83,7 @@ JNIEXPORT void JNICALL JNI_OnUnload(JavaVM *vm, void *reserved) {
if (doubleCls) env->DeleteGlobalRef(doubleCls);
if (stringCls) env->DeleteGlobalRef(stringCls);
if (connectionInfoCls) env->DeleteGlobalRef(connectionInfoCls);
if (entryInfoCls) env->DeleteGlobalRef(entryInfoCls);
if (keyNotDefinedEx) env->DeleteGlobalRef(keyNotDefinedEx);
if (persistentEx) env->DeleteGlobalRef(persistentEx);
jvm = nullptr;
@@ -347,6 +355,14 @@ static jobject ToJavaObject(JNIEnv *env, const nt::ConnectionInfo &info) {
(jlong)info.last_update, (jint)info.protocol_version);
}
static jobject ToJavaObject(JNIEnv *env, const nt::EntryInfo &info) {
static jmethodID constructor =
env->GetMethodID(entryInfoCls, "<init>", "(Ljava/lang/String;IIJ)V");
JavaLocal<jstring> name(env, ToJavaString(env, info.name));
return env->NewObject(entryInfoCls, constructor, name.obj(), (jint)info.type,
(jint)info.flags, (jlong)info.last_change);
}
//
// Exception throwers
//
@@ -836,6 +852,24 @@ JNIEXPORT void JNICALL Java_edu_wpi_first_wpilibj_networktables_NetworkTablesJNI
nt::DeleteAllEntries();
}
/*
* Class: edu_wpi_first_wpilibj_networktables_NetworkTablesJNI
* Method: getEntries
* Signature: (Ljava/lang/String;I)[Ledu/wpi/first/wpilibj/networktables/EntryInfo;
*/
JNIEXPORT jobjectArray JNICALL Java_edu_wpi_first_wpilibj_networktables_NetworkTablesJNI_getEntries
(JNIEnv *env, jclass, jstring prefix, jint types)
{
auto arr = nt::GetEntryInfo(JavaStringRef(env, prefix), types);
jobjectArray jarr = env->NewObjectArray(arr.size(), entryInfoCls, nullptr);
if (!jarr) return nullptr;
for (size_t i = 0; i < arr.size(); ++i) {
JavaLocal<jobject> jelem(env, ToJavaObject(env, arr[i]));
env->SetObjectArrayElement(jarr, i, jelem);
}
return jarr;
}
/*
* Class: edu_wpi_first_wpilibj_networktables_NetworkTablesJNI
* Method: flush