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Merge pull request #33 from rchodava/rc/allow-null-column-retrieval
Allow retrieving null column values
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89 changes: 89 additions & 0 deletions
89
core/src/main/java/org/chodavarapu/datamill/reflection/impl/TripleArgumentTypeSwitch.java
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package org.chodavarapu.datamill.reflection.impl; | ||
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import rx.functions.Func3; | ||
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import java.time.LocalDateTime; | ||
import java.util.Map; | ||
import java.util.concurrent.ConcurrentHashMap; | ||
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/** | ||
* @author Ravi Chodavarapu (rchodava@gmail.com) | ||
*/ | ||
public abstract class TripleArgumentTypeSwitch<T1, T2, T3, R> { | ||
private final Map<Class<?>, Func3<T1, T2, T3, R>> cases = new ConcurrentHashMap<>(); | ||
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public TripleArgumentTypeSwitch() { | ||
cases.put(boolean.class, (v1, v2, v3) -> caseBoolean(v1, v2, v3)); | ||
cases.put(Boolean.class, (v1, v2, v3) -> caseBooleanWrapper(v1, v2, v3)); | ||
cases.put(byte.class, (v1, v2, v3) -> caseByte(v1, v2, v3)); | ||
cases.put(Byte.class, (v1, v2, v3) -> caseByteWrapper(v1, v2, v3)); | ||
cases.put(char.class, (v1, v2, v3) -> caseCharacter(v1, v2, v3)); | ||
cases.put(Character.class, (v1, v2, v3) -> caseCharacterWrapper(v1, v2, v3)); | ||
cases.put(short.class, (v1, v2, v3) -> caseShort(v1, v2, v3)); | ||
cases.put(Short.class, (v1, v2, v3) -> caseShortWrapper(v1, v2, v3)); | ||
cases.put(int.class, (v1, v2, v3) -> caseInteger(v1, v2, v3)); | ||
cases.put(Integer.class, (v1, v2, v3) -> caseIntegerWrapper(v1, v2, v3)); | ||
cases.put(long.class, (v1, v2, v3) -> caseLong(v1, v2, v3)); | ||
cases.put(Long.class, (v1, v2, v3) -> caseLongWrapper(v1, v2, v3)); | ||
cases.put(float.class, (v1, v2, v3) -> caseFloat(v1, v2, v3)); | ||
cases.put(Float.class, (v1, v2, v3) -> caseFloatWrapper(v1, v2, v3)); | ||
cases.put(double.class, (v1, v2, v3) -> caseDouble(v1, v2, v3)); | ||
cases.put(Double.class, (v1, v2, v3) -> caseDoubleWrapper(v1, v2, v3)); | ||
cases.put(LocalDateTime.class, (v1, v2, v3) -> caseLocalDateTime(v1, v2, v3)); | ||
cases.put(byte[].class, (v1, v2, v3) -> caseByteArray(v1, v2, v3)); | ||
} | ||
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protected abstract R caseBoolean(T1 value1, T2 value2, T3 value3); | ||
protected R caseBooleanWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseBoolean(value1, value2, value3); | ||
} | ||
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protected abstract R caseByte(T1 value1, T2 value2, T3 value3); | ||
protected R caseByteWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseByte(value1, value2, value3); | ||
} | ||
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protected abstract R caseCharacter(T1 value1, T2 value2, T3 value3); | ||
protected R caseCharacterWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseCharacter(value1, value2, value3); | ||
} | ||
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protected abstract R caseShort(T1 value1, T2 value2, T3 value3); | ||
protected R caseShortWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseShort(value1, value2, value3); | ||
} | ||
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protected abstract R caseInteger(T1 value1, T2 value2, T3 value3); | ||
protected R caseIntegerWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseInteger(value1, value2, value3); | ||
} | ||
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protected abstract R caseLong(T1 value1, T2 value2, T3 value3); | ||
protected R caseLongWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseLong(value1, value2, value3); | ||
} | ||
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protected abstract R caseFloat(T1 value1, T2 value2, T3 value3); | ||
protected R caseFloatWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseFloat(value1, value2, value3); | ||
} | ||
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protected abstract R caseDouble(T1 value1, T2 value2, T3 value3); | ||
protected R caseDoubleWrapper(T1 value1, T2 value2, T3 value3) { | ||
return caseDouble(value1, value2, value3); | ||
} | ||
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protected abstract R caseLocalDateTime(T1 value1, T2 value2, T3 value3); | ||
protected abstract R caseByteArray(T1 value1, T2 value2, T3 value3); | ||
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protected abstract R defaultCase(T1 value1, T2 value2, T3 value3); | ||
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public final R doSwitch(Class<?> type, T1 value1, T2 value2, T3 value3) { | ||
Func3<T1, T2, T3, R> typeCase = cases.get(type); | ||
if (typeCase != null) { | ||
return typeCase.call(value1, value2, value3); | ||
} else { | ||
return defaultCase(value1, value2, value3); | ||
} | ||
} | ||
} |
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