com.moon.core.enums.Casters Maven / Gradle / Ivy
package com.moon.core.enums;
import com.moon.core.lang.ClassUtil;
import com.moon.core.lang.ThrowUtil;
import com.moon.core.time.DateTimeUtil;
import com.moon.core.util.converter.TypeConverter;
import java.lang.reflect.Array;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.sql.Time;
import java.sql.Timestamp;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.*;
import java.util.function.BiFunction;
import static com.moon.core.lang.BooleanUtil.toBoolean;
import static com.moon.core.lang.BooleanUtil.toBooleanValue;
import static com.moon.core.lang.ByteUtil.toByte;
import static com.moon.core.lang.ByteUtil.toByteValue;
import static com.moon.core.lang.CharUtil.toCharValue;
import static com.moon.core.lang.CharacterUtil.toCharacter;
import static com.moon.core.lang.DoubleUtil.toDouble;
import static com.moon.core.lang.DoubleUtil.toDoubleValue;
import static com.moon.core.lang.EnumUtil.toEnum;
import static com.moon.core.lang.FloatUtil.toFloat;
import static com.moon.core.lang.FloatUtil.toFloatValue;
import static com.moon.core.lang.IntUtil.toIntValue;
import static com.moon.core.lang.IntegerUtil.toInteger;
import static com.moon.core.lang.LongUtil.toLong;
import static com.moon.core.lang.LongUtil.toLongValue;
import static com.moon.core.lang.ShortUtil.toShort;
import static com.moon.core.lang.ShortUtil.toShortValue;
import static com.moon.core.math.BigDecimalUtil.toBigDecimal;
import static com.moon.core.math.BigIntegerUtil.toBigInteger;
import static com.moon.core.time.DateTimeUtil.toDateTime;
import static com.moon.core.time.DateTimeUtil.toTime;
import static com.moon.core.time.DateUtil.*;
import static com.moon.core.util.OptionalUtil.resolveOrNull;
import static java.util.Objects.requireNonNull;
import static java.util.Optional.ofNullable;
/**
* @author moonsky
*/
public enum Casters implements EnumDescriptor, BiFunction, TypeConverter {
toBooleanValue(boolean.class) {
@Override
public Object createArr(int length) { return new boolean[length]; }
@Override
public Object cast(Object o) { return toBooleanValue(o); }
},
toBoolean(Boolean.class) {
@Override
public Object createArr(int length) { return new Boolean[length]; }
@Override
public Object cast(Object o) { return toBoolean(o); }
},
toCharValue(char.class) {
@Override
public Object createArr(int length) { return new char[length]; }
@Override
public Object cast(Object o) { return toCharValue(o); }
},
toCharacter(Character.class) {
@Override
public Object createArr(int length) { return new Character[length]; }
@Override
public Object cast(Object o) { return toCharacter(o); }
},
toByteValue(byte.class) {
@Override
public Object createArr(int length) { return new byte[length]; }
@Override
public Object cast(Object o) { return toByteValue(o); }
},
toByte(Byte.class) {
@Override
public Object createArr(int length) { return new Byte[length]; }
@Override
public Object cast(Object o) { return toByte(o); }
},
toShortValue(short.class) {
@Override
public Object createArr(int length) { return new short[length]; }
@Override
public Object cast(Object o) { return toShortValue(o); }
},
toShort(Short.class) {
@Override
public Object createArr(int length) { return new Short[length]; }
@Override
public Object cast(Object o) { return toShort(o); }
},
toIntValue(int.class) {
@Override
public Object createArr(int length) { return new int[length]; }
@Override
public Object cast(Object o) { return toIntValue(o); }
},
toInteger(Integer.class) {
@Override
public Object createArr(int length) { return new Integer[length]; }
@Override
public Object cast(Object o) { return toInteger(o); }
},
toLongValue(long.class) {
@Override
public Object createArr(int length) { return new long[length]; }
@Override
public Object cast(Object o) { return toLongValue(o); }
},
toLong(Long.class) {
@Override
public Object createArr(int length) { return new Long[length]; }
@Override
public Object cast(Object o) { return toLong(o); }
},
toFloatValue(float.class) {
@Override
public Object createArr(int length) { return new float[length]; }
@Override
public Object cast(Object o) { return toFloatValue(o); }
},
toFloat(Float.class) {
@Override
public Object createArr(int length) { return new Float[length]; }
@Override
public Object cast(Object o) { return toFloat(o); }
},
toDoubleValue(double.class) {
@Override
public Object createArr(int length) { return new double[length]; }
@Override
public Object cast(Object o) { return toDoubleValue(o); }
},
toDouble(Double.class) {
@Override
public Object createArr(int length) { return new Double[length]; }
@Override
public Object cast(Object o) { return toDouble(o); }
},
toBigInteger(BigInteger.class) {
@Override
public Object createArr(int length) { return new BigInteger[length]; }
@Override
public Object cast(Object o) { return toBigInteger(o); }
},
toBigDecimal(BigDecimal.class) {
@Override
public Object createArr(int length) { return new BigDecimal[length]; }
@Override
public Object cast(Object o) { return toBigDecimal(o); }
},
toObject(Object.class) {
@Override
public Object cast(Object o) { return o; }
@Override
public Object createArr(int length) { return new Object[length]; }
},
toString(String.class) {
@Override
public Object createArr(int length) { return new String[length]; }
@Override
public Object cast(Object o) { return o == null ? null : o.toString(); }
},
toStringBuffer(StringBuffer.class) {
@Override
public Object createArr(int length) { return new StringBuffer[length]; }
@Override
public Object cast(Object o) { return o == null ? null : new StringBuffer(o.toString()); }
},
toStringBuilder(StringBuilder.class) {
@Override
public Object createArr(int length) { return new StringBuilder[length]; }
@Override
public Object cast(Object o) { return o == null ? null : new StringBuilder(o.toString()); }
},
toDate(Date.class) {
@Override
public Object createArr(int length) { return new Date[length]; }
@Override
public Object cast(Object o) { return toDate(o); }
},
toSqlTime(Time.class) {
@Override
public Object createArr(int length) { return new Time[length]; }
@Override
public Object cast(Object o) { return toSqlTime(o); }
},
toCalendar(Calendar.class) {
@Override
public Object createArr(int length) { return new Calendar[length]; }
@Override
public Object cast(Object o) { return toCalendar(o); }
},
toLocalDate(LocalDate.class) {
@Override
public Object createArr(int length) { return new LocalDate[length]; }
@Override
public Object cast(Object o) { return DateTimeUtil.toDate(o); }
},
toLocalTime(LocalTime.class) {
@Override
public Object createArr(int length) { return new LocalTime[length]; }
@Override
public Object cast(Object o) { return toTime(o); }
},
toLocalDateTime(LocalDateTime.class) {
@Override
public Object createArr(int length) { return new LocalDateTime[length]; }
@Override
public Object cast(Object o) { return toDateTime(o); }
},
toTimestamp(Timestamp.class) {
@Override
public Object createArr(int length) { return new Timestamp[length]; }
@Override
public Object cast(Object o) { return toTimestamp(o); }
},
toSqlDate(java.sql.Date.class) {
@Override
public Object createArr(int length) { return new java.sql.Date[length]; }
@Override
public Object cast(Object o) { return toSqlDate(o); }
},
toOptional(Optional.class) {
@Override
public Object createArr(int length) { return new Optional[length]; }
@Override
public Object cast(Object o) {
if (o == null) {
return Optional.empty();
} else if (o instanceof Optional) {
return o;
}
return ofNullable(resolveOrNull(o));
}
},
toOptionalInt(OptionalInt.class) {
@Override
public Object createArr(int length) { return new OptionalInt[length]; }
private OptionalInt fromNumber(Number num) {
int intVal = num.intValue();
long value = num.longValue();
if (intVal == value) {
return OptionalInt.of(intVal);
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalInt of value: " + num);
}
@Override
public Object cast(Object o) {
if (o == null) {
return OptionalInt.empty();
}
if (o instanceof OptionalInt) {
return o;
} else if (o instanceof Integer) {
return OptionalInt.of(((Integer) o).intValue());
} else if (o instanceof Number) {
return fromNumber((Number) o);
} else if (o instanceof OptionalLong) {
OptionalLong opt = (OptionalLong) o;
return opt.isPresent() ? fromNumber(opt.getAsLong()) : OptionalInt.empty();
} else if (o instanceof OptionalDouble) {
OptionalDouble opt = (OptionalDouble) o;
return opt.isPresent() ? fromNumber(opt.getAsDouble()) : OptionalInt.empty();
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalInt of value: " + o);
}
},
toOptionalLong(OptionalLong.class) {
@Override
public Object createArr(int length) { return new OptionalLong[length]; }
private OptionalLong fromNumber(Number num) {
long longVal = num.longValue();
double value = num.doubleValue();
if (longVal == 0) {
if (value == 0) {
return OptionalLong.of(0);
}
} else if (value / longVal == 0 && value % longVal == 0) {
return OptionalLong.of(longVal);
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalLong of value: " + num);
}
@Override
public Object cast(Object o) {
if (o == null) {
return OptionalLong.empty();
}
if (o instanceof OptionalLong) {
return o;
} else if (o instanceof Long) {
return OptionalLong.of(((Long) o).intValue());
} else if (o instanceof Number) {
return fromNumber((Number) o);
} else if (o instanceof OptionalInt) {
OptionalInt opt = (OptionalInt) o;
return opt.isPresent() ? fromNumber(opt.getAsInt()) : OptionalLong.empty();
} else if (o instanceof OptionalDouble) {
OptionalDouble opt = (OptionalDouble) o;
return opt.isPresent() ? fromNumber(opt.getAsDouble()) : OptionalLong.empty();
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalLong of value: " + o);
}
},
toOptionalDouble(OptionalDouble.class) {
@Override
public Object createArr(int length) { return new OptionalDouble[length]; }
private OptionalDouble fromNumber(Number num) {
long longVal = num.longValue();
double value = num.doubleValue();
if (longVal == 0) {
if (value == 0) {
return OptionalDouble.of(0);
}
} else if (value / longVal == 0 && value % longVal == 0) {
return OptionalDouble.of(longVal);
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalDouble of value: " + num);
}
@Override
public Object cast(Object o) {
if (o == null) {
return OptionalDouble.empty();
}
if (o instanceof OptionalDouble) {
return o;
} else if (o instanceof Double) {
return OptionalDouble.of(((Double) o).doubleValue());
} else if (o instanceof Number) {
return fromNumber((Number) o);
} else if (o instanceof OptionalInt) {
OptionalInt opt = (OptionalInt) o;
return opt.isPresent() ? OptionalDouble.of(opt.getAsInt()) : OptionalDouble.empty();
} else if (o instanceof OptionalLong) {
OptionalLong opt = (OptionalLong) o;
return opt.isPresent() ? OptionalDouble.of(opt.getAsLong()) : OptionalDouble.empty();
}
throw new IllegalArgumentException("Can not cast to java.util.OptionalDouble of value: " + o);
}
},
toEnum(Enum.class) {
@Override
public Object createArr(int length) { return new Enum[length]; }
@Override
public Object cast(Object o) { return ThrowUtil.runtime("Unsupported."); }
@Override
public Object apply(Object o, Class type) { return toEnum(o, type); }
},
toClass(Class.class) {
@Override
public T cast(Object o) {
if (o instanceof Class) {
return (T) o;
} else if (o instanceof CharSequence) {
Class type = ClassUtil.forNameOrNull(o.toString());
return (T) (type == null ? o.getClass() : type);
} else if (o == null) {
return ThrowUtil.runtime(String.valueOf(null));
} else {
return (T) o.getClass();
}
}
@Override
public Object createArr(int length) { return new Class[length]; }
};
public final Class TYPE;
private static class Cached {
final static Map CACHE = new HashMap();
}
Casters(Class type) { Cached.CACHE.put(this.TYPE = type, this); }
public abstract T cast(Object o);
public abstract Object createArr(int length);
public Object toArray(Object... values) {
if (values == null) {
return null;
}
int length = values.length;
Object array = Array.newInstance(TYPE, length);
System.arraycopy(values, 0, array, 0, length);
return array;
}
public static Casters getOrNull(Class type) { return Cached.CACHE.get(type); }
public static TypeConverter getOrDefault(Class type, TypeConverter defaultConverter) {
TypeConverter caster = getOrNull(type);
return caster == null ? defaultConverter : caster;
}
@Override
public Object convertTo(Object o) { return cast(o); }
@Override
public Object apply(Object o, Class aClass) { return cast(o); }
@Override
public final String getText() { return TYPE.getName(); }
public final static T to(Object o, Class type) { return (T) requireNonNull(getOrNull(type)).apply(o, type); }
}
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