com.vladsch.kotlin.jdbc.ModelPropertyProviderBase.kt Maven / Gradle / Ivy

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A thin library that exposes JDBC API with the convenience of Kotlin and gets out of the way when not needed.
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package com.vladsch.kotlin.jdbc

import kotlin.reflect.KProperty

open class ModelPropertyProviderBase(val provider: ModelProperties, val propType: PropertyType, override val columnName: String?, override val defaultValue:Any? = Unit) : InternalModelPropertyProvider {
    final override fun provideDelegate(thisRef: T, prop: KProperty<*>): ModelProperties {
        return provider.registerProp(prop, propType, columnName, defaultValue)
    }

    final override val autoKey: ModelPropertyProvider
        get() = provider.autoKey

    override val key: ModelPropertyProvider
        get() = provider.key

    override val auto: ModelPropertyProvider
        get() = provider.auto

    override val default: ModelPropertyProvider
        get() = provider.default

    final override operator fun  getValue(thisRef: T, property: KProperty<*>): V {
        return provider.getValue(thisRef, property)
    }

    final override operator fun  setValue(thisRef: T, property: KProperty<*>, value: V) {
        provider.setValue(thisRef, property, value)
    }

    override fun column(columnName: String?): ModelPropertyProvider {
        return if (this.columnName == columnName) {
            this
        } else {
            if (columnName == null) {
                provider
            } else {
                ModelPropertyProviderBase(provider, propType, columnName)
            }
        }
    }

    override fun default(value: Any?): ModelPropertyProvider {
        return ModelPropertyProviderBase(provider, propType, columnName, value)
    }
}

class ModelPropertyProviderAutoKey(provider: ModelProperties, columnName: String?) : ModelPropertyProviderBase(provider, PropertyType.AUTO_KEY, columnName) {
    override val key: ModelPropertyProvider
        get() = this

    override val auto: ModelPropertyProvider
        get() = this

    override val default: ModelPropertyProvider
        get() = this

    override fun column(columnName: String?): ModelPropertyProvider {
        return if (this.columnName == columnName) {
            this
        } else {
            if (columnName == null) {
                provider.autoKey
            } else {
                ModelPropertyProviderAutoKey(provider, columnName)
            }
        }
    }

    override fun default(value: Any?): ModelPropertyProvider {
        if (value === Unit) return this
        throw IllegalStateException("Auto Key column cannot have a default value")
    }
}

class ModelPropertyProviderKey(provider: ModelProperties, columnName: String?) : ModelPropertyProviderBase(provider, PropertyType.KEY, columnName) {
    override val key: ModelPropertyProvider
        get() = this

    override val auto: ModelPropertyProvider
        get() = provider.autoKey

    override val default: ModelPropertyProvider
        get() = provider.autoKey

    override fun column(columnName: String?): ModelPropertyProvider {
        return if (this.columnName == columnName) {
            this
        } else {
            if (columnName == null) {
                provider.key
            } else {
                ModelPropertyProviderKey(provider, columnName)
            }
        }
    }

    override fun default(value: Any?): ModelPropertyProvider {
        if (value === Unit) return this
        throw IllegalStateException("Key column cannot have a default value")
    }
}

class ModelPropertyProviderAuto(provider: ModelProperties, columnName: String?) : ModelPropertyProviderBase(provider, PropertyType.AUTO, columnName) {
    override val key: ModelPropertyProvider
        get() = provider.autoKey

    override val auto: ModelPropertyProvider
        get() = this

    override val default: ModelPropertyProvider
        get() = this

    override fun column(columnName: String?): ModelPropertyProvider {
        return if (this.columnName == columnName) {
            this
        } else {
            if (columnName == null) {
                provider.auto
            } else {
                ModelPropertyProviderAuto(provider, columnName)
            }
        }
    }

    override fun default(value: Any?): ModelPropertyProvider {
        if (value === Unit) return this
        throw IllegalStateException("Auto column cannot have a default value")
    }
}

class ModelPropertyProviderDefault(provider: ModelProperties, columnName: String?, value: Any?) : ModelPropertyProviderBase(provider, PropertyType.DEFAULT, columnName, value) {
    override val key: ModelPropertyProvider
        get() = provider.autoKey

    override val auto: ModelPropertyProvider
        get() = provider.auto

    override val default: ModelPropertyProvider
        get() = this

    override fun column(columnName: String?): ModelPropertyProvider {
        return if (this.columnName == columnName) {
            this
        } else {
            if (columnName == null) {
                provider.default
            } else {
                ModelPropertyProviderDefault(provider, columnName, defaultValue)
            }
        }
    }

    override fun default(value: Any?): ModelPropertyProvider {
        if (value === defaultValue) return this
        return ModelPropertyProviderBase(provider, propType, columnName, value)
    }
}