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com.webfirmframework.wffweb.wffbm.data.WffBMArray Maven / Gradle / Ivy
/*
* Copyright 2014-2020 Web Firm Framework
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.webfirmframework.wffweb.wffbm.data;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import com.webfirmframework.wffweb.WffRuntimeException;
import com.webfirmframework.wffweb.util.WffBinaryMessageUtil;
import com.webfirmframework.wffweb.util.data.NameValue;
/**
* The java array object representation for JavaScript array.
* WffBMObject bmObject = new WffBMObject();
*
* WffBMArray stringArray = new WffBMArray(BMValueType.STRING);
* stringArray.add("array value 1");
* stringArray.add("array value 2");
*
* bmObject.put("stringArray", BMValueType.BM_ARRAY, stringArray);
*
* WffBMArray numberArray = new WffBMArray(BMValueType.NUMBER);
* numberArray.add(555);
* numberArray.add(5);
* numberArray.add(55);
*
* bmObject.put("numberArray", BMValueType.BM_ARRAY, numberArray);
*
* // to store bytes in an array use WffBMByteArray
* WffBMByteArray byteArray = new WffBMByteArray();
* byteArray.write("こんにちは WFFWEB".getBytes(StandardCharsets.UTF_8));
*
* bmObject.put("byteArray", BMValueType.BM_BYTE_ARRAY, byteArray);
*
* WffBMArray booleanArray = new WffBMArray(BMValueType.BOOLEAN);
* booleanArray.add(true);
* booleanArray.add(false);
* booleanArray.add(true);
*
* bmObject.put("booleanArray", BMValueType.BM_ARRAY, booleanArray);
*
* WffBMArray regexArray = new WffBMArray(BMValueType.REG_EXP);
* regexArray.add("[w]");
* regexArray.add("[f]");
* regexArray.add("[f]");
*
* bmObject.put("regexArray", BMValueType.BM_ARRAY, regexArray);
*
* WffBMArray funcArray = new WffBMArray(BMValueType.FUNCTION);
* funcArray.add("function(arg) {console.log(arg);}");
* funcArray.add("function(arg1) {console.log(arg1);}");
* funcArray.add("function(arg2) {console.log(arg2);}");
*
* bmObject.put("funcArray", BMValueType.BM_ARRAY, funcArray);
*
* WffBMArray nullArray = new WffBMArray(BMValueType.NULL);
* nullArray.add(null);
* nullArray.add(null);
* nullArray.add(null);
*
* bmObject.put("nullArray", BMValueType.BM_ARRAY, nullArray);
*
* WffBMArray undefinedArray = new WffBMArray(BMValueType.UNDEFINED);
* undefinedArray.add(null);
* undefinedArray.add(null);
* undefinedArray.add(null);
*
* bmObject.put("undefinedArray", BMValueType.BM_ARRAY, undefinedArray);
*
* WffBMArray arrayArray = new WffBMArray(BMValueType.BM_ARRAY);
* arrayArray.add(funcArray);
* arrayArray.add(funcArray);
* arrayArray.add(funcArray);
*
* bmObject.put("arrayArray", BMValueType.BM_ARRAY, arrayArray);
*
* WffBMArray objectArray = new WffBMArray(BMValueType.BM_OBJECT);
* objectArray.add(bmObject.clone());
* objectArray.add(bmObject.clone());
* objectArray.add(bmObject.clone());
*
* bmObject.put("objectArray", BMValueType.BM_ARRAY, objectArray);
*
*
* @author WFF
* @see WffBMByteArray
* @see WffBMObject
*/
public class WffBMArray extends LinkedList implements WffBMData {
private static final long serialVersionUID = 1L;
private boolean outer;
private BMValueType valueType;
public WffBMArray(final BMValueType valueType) {
this.valueType = valueType;
}
public WffBMArray(final BMValueType valueType, final boolean outer) {
this.valueType = valueType;
this.outer = outer;
}
public WffBMArray(final byte[] bmArrayBytes) {
try {
valueType = initWffBMObject(bmArrayBytes, true);
} catch (final RuntimeException e) {
throw new WffRuntimeException("Invalid Wff BM Array bytes", e);
}
}
public WffBMArray(final byte[] bmArrayBytes, final boolean outer) {
try {
valueType = initWffBMObject(bmArrayBytes, outer);
} catch (final RuntimeException e) {
throw new WffRuntimeException("Invalid Wff BM Array bytes", e);
}
}
/**
* @param bmArrayBytes
* @param outer
* @return
*
*/
private BMValueType initWffBMObject(final byte[] bmArrayBytes, final boolean outer) {
if (bmArrayBytes.length == 0 && !outer) {
// if the inner WffBMArray is an empty array then the bmArrayBytes
// will be an empty array. Then we can say its type is null in the
// perceptive of Java it is BMValueType is null
// because there is no type for an empty array value in JavaSript
// for JavaScript null type there is BMValueType.NULL
return null;
}
final List bmObject = WffBinaryMessageUtil.VERSION_1.parse(bmArrayBytes);
final Iterator iterator = bmObject.iterator();
if (iterator.hasNext()) {
if (outer) {
final NameValue typeNameValue = iterator.next();
if (typeNameValue.getName()[0] == BMType.ARRAY.getType()) {
this.outer = true;
} else {
throw new WffRuntimeException("Not a valid Wff BM Array bytes");
}
}
if (iterator.hasNext()) {
final NameValue nameValue = iterator.next();
final byte valueType = nameValue.getName()[0];
final byte[][] values = nameValue.getValues();
if (valueType == BMValueType.STRING.getType()) {
for (final byte[] value : values) {
this.add(new String(value, StandardCharsets.UTF_8));
}
} else if (valueType == BMValueType.NUMBER.getType()) {
for (final byte[] value : values) {
final double doubleValue = ByteBuffer.wrap(value).getDouble(0);
this.add(doubleValue);
}
} else if (valueType == BMValueType.UNDEFINED.getType()) {
for (@SuppressWarnings("unused")
final byte[] value : values) {
this.add(null);
}
} else if (valueType == BMValueType.NULL.getType()) {
for (@SuppressWarnings("unused")
final byte[] value : values) {
this.add(null);
}
} else if (valueType == BMValueType.BOOLEAN.getType()) {
for (final byte[] value : values) {
this.add(value[0] == 1);
}
} else if (valueType == BMValueType.BM_OBJECT.getType()) {
for (final byte[] value : values) {
this.add(new WffBMObject(value, false));
}
} else if (valueType == BMValueType.BM_ARRAY.getType()) {
for (final byte[] value : values) {
this.add(new WffBMArray(value, false));
}
} else if (valueType == BMValueType.REG_EXP.getType()) {
for (final byte[] value : values) {
this.add(new String(value, StandardCharsets.UTF_8));
}
} else if (valueType == BMValueType.FUNCTION.getType()) {
for (final byte[] value : values) {
this.add(new String(value, StandardCharsets.UTF_8));
}
} else if (valueType == BMValueType.BM_BYTE_ARRAY.getType()) {
for (final byte[] value : values) {
this.add(new WffBMByteArray(value, false));
}
} else if (valueType == BMValueType.INTERNAL_BYTE.getType()) {
throw new WffRuntimeException(
"BMValueType.BYTE is only for internal use, use WffBMByteArray for row bytes.");
}
return BMValueType.getInstanceByType(valueType);
}
}
return null;
}
public boolean isOuter() {
return outer;
}
public void setOuter(final boolean outer) {
this.outer = outer;
}
public byte[] build() {
try {
return buildBytes(outer);
} catch (final Exception e) {
throw new WffRuntimeException("Could not build wff bm array bytes", e);
}
}
/**
* NB: use buildBytes instead of this method.
*
* @param outer
* @return the bytes representation of the object
* @throws UnsupportedEncodingException throwing this exception will be removed
* in future version because its internal
* implementation will never make this
* exception due to the code changes since
* 3.0.1.
* @since 1.1.5
* @deprecated building bytes implementation doesn't throw
* UnsupportedEncodingException so deprecated this method. The same
* goal can be achieved using buildBytes method.
*/
@Deprecated
@Override
public byte[] build(final boolean outer) throws UnsupportedEncodingException {
return buildBytes(outer);
}
/**
* @param outer
* @return bytes for this WffBMArray object
*/
@Override
public byte[] buildBytes(final boolean outer) {
final Deque nameValues = new ArrayDeque<>(outer ? 2 : 1);
if (outer) {
final NameValue typeNameValue = new NameValue();
typeNameValue.setName(new byte[] { BMType.ARRAY.getType() });
nameValues.add(typeNameValue);
}
final NameValue nameValue = new NameValue();
final byte valueType = this.valueType.getType();
nameValue.setName(valueType);
nameValues.add(nameValue);
final byte[][] values = new byte[size()][0];
nameValue.setValues(values);
if (valueType == BMValueType.STRING.getType()) {
int count = 0;
for (final Object eachValue : this) {
final String value = (String) eachValue;
values[count] = value.getBytes(StandardCharsets.UTF_8);
count++;
}
} else if (valueType == BMValueType.NUMBER.getType()) {
int count = 0;
for (final Object eachValue : this) {
final Number value = (Number) eachValue;
values[count] = WffBinaryMessageUtil.getOptimizedBytesFromDouble(value.doubleValue());
count++;
}
} else if (valueType == BMValueType.UNDEFINED.getType()) {
for (int i = 0; i < size(); i++) {
values[i] = new byte[] {};
}
} else if (valueType == BMValueType.NULL.getType()) {
for (int i = 0; i < size(); i++) {
values[i] = new byte[] {};
}
} else if (valueType == BMValueType.BOOLEAN.getType()) {
int count = 0;
for (final Object eachValue : this) {
final Boolean value = (Boolean) eachValue;
final byte[] valueBytes = { (byte) (value.booleanValue() ? 1 : 0) };
values[count] = valueBytes;
count++;
}
} else if (valueType == BMValueType.BM_OBJECT.getType()) {
int count = 0;
for (final Object eachValue : this) {
final WffBMObject value = (WffBMObject) eachValue;
values[count] = value.buildBytes(false);
count++;
}
} else if (valueType == BMValueType.BM_ARRAY.getType()) {
int count = 0;
for (final Object eachValue : this) {
final WffBMArray value = (WffBMArray) eachValue;
values[count] = value.buildBytes(false);
count++;
}
} else if (valueType == BMValueType.REG_EXP.getType()) {
int count = 0;
for (final Object eachValue : this) {
final String value = (String) eachValue;
values[count] = value.getBytes(StandardCharsets.UTF_8);
count++;
}
} else if (valueType == BMValueType.FUNCTION.getType()) {
int count = 0;
for (final Object eachValue : this) {
final String value = (String) eachValue;
values[count] = value.getBytes(StandardCharsets.UTF_8);
count++;
}
} else if (valueType == BMValueType.BM_BYTE_ARRAY.getType()) {
int count = 0;
for (final Object eachValue : this) {
@SuppressWarnings("resource")
final WffBMByteArray value = (WffBMByteArray) eachValue;
values[count] = value.build(false);
count++;
}
} else if (valueType == BMValueType.INTERNAL_BYTE.getType()) {
throw new WffRuntimeException(
"BMValueType.BYTE is only for internal use, use WffBMByteArray for row bytes.");
}
return WffBinaryMessageUtil.VERSION_1.getWffBinaryMessageBytes(nameValues);
}
/**
* gets value type of this array only if it contains any value otherwise returns
* null.
*
* @return the value type of this array
* @since 2.1.0
* @author WFF
*/
public BMValueType getValueType() {
return valueType;
}
@Override
public BMType getBMType() {
return BMType.ARRAY;
}
}
