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Copy pathValueToVariableValueCompiler.java
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138 lines (124 loc) · 5.67 KB
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package graphql.normalized;
import graphql.AssertException;
import graphql.Internal;
import graphql.language.ArrayValue;
import graphql.language.BooleanValue;
import graphql.language.EnumValue;
import graphql.language.FloatValue;
import graphql.language.IntValue;
import graphql.language.NullValue;
import graphql.language.ObjectField;
import graphql.language.ObjectValue;
import graphql.language.StringValue;
import graphql.language.Value;
import graphql.language.VariableDefinition;
import graphql.language.VariableReference;
import graphql.parser.Parser;
import org.jspecify.annotations.NonNull;
import org.jspecify.annotations.Nullable;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import static java.util.stream.Collectors.toList;
@Internal
public class ValueToVariableValueCompiler {
static VariableValueWithDefinition normalizedInputValueToVariable(NormalizedInputValue normalizedInputValue, int queryVariableCount) {
Object variableValue = normalisedValueToVariableValue(normalizedInputValue);
String varName = getVarName(queryVariableCount);
return new VariableValueWithDefinition(
variableValue,
VariableDefinition.newVariableDefinition()
.name(varName)
.type(Parser.parseType(normalizedInputValue.getTypeName()))
.build(),
VariableReference.newVariableReference().name(varName).build());
}
@SuppressWarnings("unchecked")
@Nullable
static Object normalisedValueToVariableValue(Object maybeValue) {
Object variableValue;
if (maybeValue instanceof NormalizedInputValue) {
NormalizedInputValue normalizedInputValue = (NormalizedInputValue) maybeValue;
Object inputValue = normalizedInputValue.getValue();
if (inputValue instanceof Value) {
variableValue = toVariableValue((Value<?>) inputValue);
} else if (inputValue instanceof List) {
variableValue = normalisedValueToVariableValues((List<Object>) inputValue);
} else if (inputValue instanceof Map) {
variableValue = normalisedValueToVariableValues((Map<String, Object>) inputValue);
} else if (inputValue == null) {
variableValue = null;
} else {
throw new AssertException("Should never happen. Did not expect NormalizedInputValue.getValue() of type: " + maybeClass(inputValue));
}
} else if (maybeValue instanceof Value) {
Value<?> value = (Value<?>) maybeValue;
variableValue = toVariableValue(value);
} else if (maybeValue instanceof List) {
variableValue = normalisedValueToVariableValues((List<Object>) maybeValue);
} else if (maybeValue instanceof Map) {
variableValue = normalisedValueToVariableValues((Map<String, Object>) maybeValue);
} else {
throw new AssertException("Should never happen. Did not expect type: " + maybeClass(maybeValue));
}
return variableValue;
}
private static List<Object> normalisedValueToVariableValues(List<Object> arrayValues) {
return arrayValues.stream()
.map(ValueToVariableValueCompiler::normalisedValueToVariableValue)
.collect(toList());
}
@NonNull
private static Map<String, Object> normalisedValueToVariableValues(Map<String, Object> objectMap) {
Map<String, Object> output = new LinkedHashMap<>();
objectMap.forEach((k, v) -> {
Object value = normalisedValueToVariableValue(v);
output.put(k, value);
});
return output;
}
private static Map<String, Object> toVariableValue(ObjectValue objectValue) {
Map<String, Object> map = new LinkedHashMap<>();
List<ObjectField> objectFields = objectValue.getObjectFields();
for (ObjectField objectField : objectFields) {
String objectFieldName = objectField.getName();
Value<?> objectFieldValue = objectField.getValue();
map.put(objectFieldName, toVariableValue(objectFieldValue));
}
return map;
}
@NonNull
private static List<Object> toVariableValues(List<Value> arrayValues) {
// some values can be null (NullValue) and hence we can use Immutable Lists
return arrayValues.stream()
.map(ValueToVariableValueCompiler::toVariableValue)
.collect(toList());
}
@Nullable
private static Object toVariableValue(Value<?> value) {
if (value instanceof ObjectValue) {
return toVariableValue((ObjectValue) value);
} else if (value instanceof ArrayValue) {
return toVariableValues(((ArrayValue) value).getValues());
} else if (value instanceof StringValue) {
return ((StringValue) value).getValue();
} else if (value instanceof FloatValue) {
return ((FloatValue) value).getValue();
} else if (value instanceof IntValue) {
return ((IntValue) value).getValue();
} else if (value instanceof BooleanValue) {
return ((BooleanValue) value).isValue();
} else if (value instanceof EnumValue) {
return ((EnumValue) value).getName();
} else if (value instanceof NullValue) {
return null;
}
throw new AssertException("Should never happen. Cannot handle node of type: " + maybeClass(value));
}
private static Object maybeClass(Object maybe) {
return maybe == null ? "null" : maybe.getClass();
}
private static String getVarName(int variableOrdinal) {
return "v" + variableOrdinal;
}
}